List of Dennis the Menace (1959 TV series) episodes

This is a list of episodes from the 1959–1963 United States television series Dennis the Menace. The series is based on the Hank Ketcham comic strip of the same name.

Dennis the Menace 1959 title screen

The series ran for four seasons for a total of 146 episodes from October 4, 1959 to July 7, 1963.

Series overview

Season		Episodes		Originally aired
				First aired	Last aired
	1	32		October 4, 1959	June 6, 1960
	2	38		October 2, 1960	June 25, 1961
	3	38		October 1, 1961	July 1, 1962
	4	38		September 30, 1962	July 7, 1963

Episodes

Season 1 (1959–60)

No. overall	No. in season	Title	Directed by	Written by	Original air date
1	1	"Dennis Goes to the Movies"	William D. Russell	William Cowley & Peggy Chantler	October 4, 1959
Dennis successfully eludes a babysitter (whom he has never met) and sneaks out of the house and goes to a cowboy movie that his parents also go to while Joey is left with the babysitter, pretending to be Dennis. Madge Blake appears as Mrs. Porter the babysitter. Note: (This pilot was made late in 1958. Mrs. Wilson does not appear. Also, due to editing issues, the final two-minute scene was shot in August 1959, when Dennis obviously had a different hairstyle and sounded more polished than during the rest of the episode.)
2	2	"Dennis and the Signpost"	William D. Russell	William Cowley & Peggy Chantler	October 11, 1959
Dennis and Tommy fix a fallen street signpost but fail to notice they've put it up with the street names facing in the wrong direction. Because of the mix up, Mr. Wilson gets a pool dug in his yard instead of it being re-seeded. Suddenly, everyone in the neighborhood wants to be Mr. Wilson's friend. Note: (This is the first appearance of Martha Wilson, Tommy Anderson (Billy Booth), Margaret Wade and Lucy Elkins as well as the first of six appearances in the first season by Ron Howard as Dennis' friend, Stewart. Mrs. Wilson, played by Sylvia Field, appeared in several episodes that were made before but aired after this one. While this was the eighth episode made in the summer of 1959, it was the second episode to air.)
3	3	"The Fishing Trip"	William D. Russell	William Cowley & Peggy Chantler	October 18, 1959
Henry and Mr. Wilson have a fishing trip planned and are trying to keep Dennis from finding out. Dennis however knows something is up when he sees a package delivered to the house that has fishing stuff in it and so it turns out to be a long night for Dennis as he won't rest until he finds out what's in the package. Eventually he figures it out and so Henry and Mr. Wilson end up taking Dennis along after all. Note: (This was the second episode made but held back in order to air a more recent episode where the cast is more established.)
4	4	"Grandpa and Miss Cathcart"	William D. Russell	William Cowley & Peggy Chantler	October 25, 1959
Dennis tries to fix up his Grandpa Perkins (James Bell) with Miss Cathcart and other ladies in the neighborhood. Miss Cathcart takes an interest in him, sings for him, and pretty much makes him miserable. Robert B. Williams appears as Mr. Dorfman the Mailman. Note: Mr. and Mrs. Wilson do not appear in this episode. This is the first appearance for Esther Cathcart, played by Mary Wickes.
5	5	"Innocents in Space"	William D. Russell	George Tibbles	November 1, 1959
Mr. Wilson gets a telescope and is convinced he spotted a missing satellite in space. What he actually spotted was a ping-pong ball that glows in the dark from Dennis' pop gun that Dennis was shooting in the air to win a contest from a kids TV show called Captain Blast (Parley Baer).
6	6	"Dennis' Garden"	William D. Russell	Hannibal Coons & Milton Pascal & George Tibbles	November 8, 1959
Henry and Mr. Wilson decide to plant Dennis a flower garden of his own hoping to keep Dennis out of Mr. Wilson's flower garden. Dennis thinks the Dahlia bulbs that Mr. Wilson planted in his garden were scraggly sweet potatoes, so he digs them out and puts in fresh real sweet potatoes. Henry goes to replace them, but Dennis already has, so the mix up still exists. Mr. Wilson unknowingly plants his Dahlia bulbs in Dennis' garden. They both win blue ribbons for their gardens.
7	7	"The New Neighbors"	William D. Russell	William Cowley & Peggy Chantler	November 15, 1959
Mr. Wilson's helps an old neighbor sell his house. He tries to talk a retired couple with no children into moving in next door, which almost works until Dennis and his friends come bursting into Mr. Wilson's house and the couple see how loud things will be. So, what happens is the window repair man is moving in next door, and he has 4 kids, which is not what Mr. Wilson wanted at all. Note: This was the first of only two appearances in the series for Tommy's often-mentioned mother, Mrs. Anderson, played by character actress Jean Howell. The other was in the second season episode "Dennis and the Saxophone."
8	8	"Tenting Tonight"	William D. Russell	William Cowley & Peggy Chantler	November 22, 1959
Mr. Wilson returns from a camping trip, inspiring Dennis and Tommy to camp out in the backyard. That night, Mr. Wilson mistakenly thinks the circus train has crashed and the animals have escaped, but the noises are only the Mitchells' neighbors, the Meltons (Dave Willock & Jenna McMahon), playing a sound-effects record for Henry and Alice.
9	9	"Dennis Sells Bottles"	William D. Russell	William Cowley & Peggy Chantler & Clifford Goldsmith	November 29, 1959
Dennis thinks his father is broke, so he sells bottles in an attempt to make some extra money while informing the neighborhood of the Mitchells' dire straits. Note: Mr. and Mrs. Wilson do not appear in this episode. This is the first appearance for grocer Otis Quigley, played by Willard Waterman.
10	10	"Mr. Wilson's Award"	Don Taylor	William Cowley & Peggy Chantler	December 6, 1959
Mr. Wilson is to receive a surprise plaque at a town meeting, but he is planning on a vacation that same day. The Mitchell's start a rumor that they are moving to New York in order to keep Mr. Wilson in town to receive the plaque. However, things start getting a little out of hand once Dennis gets word of it. Soon the whole neighborhood thinks the Mitchell's really are moving to New York.
11	11	"The Christmas Story" "Dennis & Christmas"	Don Taylor	William Cowley & Peggy Chantler	December 20, 1959
It's Christmas time and Dennis is going around the house looking for his presents. Henry and Alice think they have the perfect place to hide them, The Wilson's house in Mr. Wilson's closet. Mr. and Mrs. Wilson come over for Christmas eve. Dennis figures it out when he goes over to the Wilson's house, opens the closet door and sees his gifts.
12	12	"Dennis and the Cowboy"	William D. Russell	William Cowley & Peggy Chantler	December 27, 1959
Dennis hopes to meet Whip Crawford, his cowboy idol, after Mrs. Webster (Isabel Randolph) tells Dennis that Whip will be in the community pageant. Whip doesn't want to be in the play because he claims his feet hurt, so he tries to dodge Mrs. Webster and everyone else. Dennis, who doesn't give up, does everything he can to get Whip Crawford in the play including going to his hotel room and talking to Whip himself which in the end works. Note: The role of Crawford is played by Brad Johnson (1924–1981), who had been the deputy Lofty Craig on the syndicated western series Annie Oakley. This was the third episode made and held to show more recently made episodes. It also is the first episode to include Dennis' rival Johnny Brady, played by Gregory Irvin. (Mr. and Mrs. Wilson do not appear in this episode.)[1]
13	13	"Dennis Haunts a House"	Charles Barton	George Tibbles	January 3, 1960
Dennis, Tommy, and Stewart start a clubhouse in Mr. Wilson's crawl-space. After the fortune-teller Madame Tina (Maudie Prickett) tells Mr. Wilson that he will hear from one of his late relatives, he hears noises in the house and thinks a late relative has come back from the dead, but it's Dennis and his friends in the basement.
14	14	"Dennis' Tree House"	Charles Barton	William Cowley & Peggy Chantler & Hannibal Coons	January 10, 1960
Dennis has a tree house that hangs over Mr. Wilson's back yard. Mr. Wilson is not thrilled about it because he thinks that Dennis up in the tree house will scare all the birds away. Mr. Wilson attempts to teach Dennis about bird watching. Dennis takes care of a sick bird, which proves to be the first of its species ever found in their region, prompting a visit by an excited bird club official, Mr. Pomeroy (Maurice Manson). Note: This is the first of only two appearances in the series of Tommy's father, Mr. Anderson, although he is mentioned in many episodes spanning the show's entire run. Mr. Anderson, who is played by Lee Millar, also appeared in the third-season episode, "Dennis and the Pee Wee League."
15	15	"Dennis and the Rare Coin"	Don Taylor	William Cowley & Peggy Chantler & Louella McFarlane	January 17, 1960
Mr. Wilson pays $250.00 for a rare gold coin from a con artist that turns out to be a fake coin. Mrs. Wilson, without realizing what it is, lets Dennis take it to use in a wishing well, which was the town fountain. Mr. Wilson gets arrested for wading in the fountain looking for his coin. Mr. Wilson wishes that Dennis would go on vacation for a week and his wish comes true in the end when he learns that Dennis is going to his Grandpa's for a week. Note: While at the police station, Dennis mentions on his last visit he was given ice cream. He was referring to an early episode that already had been made, but was not aired until later the first season, called "Dennis Runs Away." Also, this is the first appearance of Sgt. Theodore Mooney (George Cisar).
16	16	"Dennis and the Bike"	Charles Barton	William Cowley & Peggy Chantler	January 24, 1960
Dennis wants a bike so bad that he will do almost anything to get one such as taking one away from another child, trying to win one in a bean contest, riding Mr. Wilson's exercise bike, and getting engaged to Margaret. Finally in the end Henry takes Dennis shopping for a bike.
17	17	"Dennis and the Open House"	Don Taylor	Story by : Cally Curtis Teleplay by : George Tibbles	February 7, 1960
The Mitchell's are having a party to entertain one of Henry's clients, Mr. Purdy (Grandon Rhodes), but people are having trouble finding the house. Dennis finds an open house sign and puts it in the front yard and soon the house is over run with people who think that the house is for sale. Note: This was the fifth episode made and Margaret Wade's (Jeannie Russell) first episode, although several later episodes with her appearance airs prior to this one.
18	18	"Dennis and the Duck"	William D. Russell	William Cowley & Peggy Chantler	February 14, 1960
Mr. Wilson is plagued by a duck that Dennis adopted when its original owner moved away. At first Dennis hides the duck from his parents, but when Mr. Wilson complains about the damage caused to his garden and himself, Dennis reluctantly admits to having the duck. His father helps Dennis build an enclosure for the duck, but Mr. Wilson continues to have problems with Dennis' new pet -- and begins to scheme how to get rid of it even if Dennis and his parents won't. Note: This was the sixth episode made.
19	19	"Dennis and the Swing"	Charles Barton	George Tibbles & Paul West & David Schwartz	February 21, 1960
Henry tries to take Alice out for their anniversary which Henry completely forgot about. Meanwhile, Dennis wants to put up a swing in his yard and ends up chasing a cat who Mr. Wilson is house sitting for up a tree in the process. Dennis and Tommy then recruit an ice cream man to help get the cat out of the tree and put up the swing rope. The ice cream truck shuts down and the driver must store his ice cream in Henry's freezer.
20	20	"Dennis and the Dog"	Charles Barton	Phil Leslie	February 28, 1960
Mr. Wilson wants to enter one of his paintings in the local art exhibit. Dennis takes care of a dog named Charlie who accidentally paints over Mr. Wilson's painting with his tail. Mr. Wilson enters a different painting, but the painting that wins is the one Charlie painted over. Byron Foulger appears as Frederick Timberlake, one of the judges.
21	21	"Mr. Wilson's Sister"	Charles Barton	William Cowley & Peggy Chantler	March 6, 1960
Dennis meets Mr. Wilson's sister, Helen. Helen brings George a book he had as a child, Treasure Island. She reads the book to Dennis and Tommy, and they become fascinated with buried treasure. Mr. Wilson draws a treasure map to trick the boys into tilling his garden plot. When Dennis and the other boys start digging they find a treasure only it came off a costume bracelet of Alice's that Henry put there for the boys to find. But, when Mr. Wilson sees it he starts getting excited until he finds out that it isn't real treasure.
22	22	"Dennis and the TV Set"	Charles Barton	William Cowley & Peggy Chantler	March 13, 1960
When Dennis notices that his friend has his own TV set, he will do anything he can to convince his parents to buy him a TV set of his own. Henry and Alice both turn him down. Mr. Wilson shows Dennis how to work the remote control for his TV. Dennis uses his friend's remote to operate Mr. Wilson's television from Dennis' bedroom window, and Mr. Wilson cannot understand what is happening. Dub Taylor appears as Opie Swanson, the repair man.
23	23	"Dennis Creates a Hero"	Charles Barton	William Cowley & Peggy Chantler	March 20, 1960
Dennis wants his dad to be a hero so bad after Johnny Brady's dad always seems to get his picture in the paper for some heroic act. So Dennis tries to talk the town newspaper publisher, Mr. Krinkie (Charles Seel) into putting Henry's picture in the paper and make him a hero. Through a mix-up, Henry does get his picture in the paper, but as a thief who stole from a church.
24	24	"Dennis' Paper Drive"	Charles Barton	Story by : William Cowley & Peggy Chantler & Arthur Marx and Mannie Manheim Teleplay by : William Cowley & Peggy Chantler	April 10, 1960
Dennis and a bunch of other town boys are collecting papers for a charity and the prize for the boy who collects the most papers is a Silver dollar. When Mr. Wilson gets word of that, he looks up the value of the Silver dollar and finds it's worth $600. He is determined to make sure that Dennis wins the prize so that he can get the silver dollar. Note: Nancy Evans appears in this and the next episode as June Wilson, George's sister, who visits while Martha is out of town visiting her mother. This was the first of seven consecutive episodes in which Sylvia Field does not appear, and eight out of nine to end the first season. The only exception, "Dennis Runs Away," was filmed early in the first season but held because of editing issues.
25	25	"Dennis and the Bees"	Charles Barton	Phil Leslie	April 17, 1960
Dennis and Tommy learn that local handyman Opie Swanson (Dub Taylor) might have to move because his bees can't find honey. To help the bees find honey Dennis sprays perfume on Mr. Wilson's camellias. Mr. Wilson of course gets carried away thinking he has developed a rare flower that will make him a fortune and enlists Merrivale the Florist (Will Wright) to help sell them. Then they discover that the fragrant smell was put there by Dennis.
26	26	"Alice's Birthday"	Charles Barton	George Tibbles	April 24, 1960
Henry will be out of town for Alice's birthday, so he gives Dennis some money to buy her a present. Mr. Wilson sends him down to Finch's (Charles Lane) drug store to shop for his mother. When Dennis goes there he ends up causing chaos and to make matters worse he puts a sign on him telling people to get his mother birthday presents.
27	27	"Dennis Becomes a Baby Sitter"	Charles Barton	Story by : Hannibal Coons & Dick Wesson Teleplay by : Hannibal Coons & Dick Wesson & William Cowley & Peggy Chantler	May 1, 1960
Dennis winds up babysitting a little boy who is a guest of the Wilsons after his father and Mr. Wilson mistakenly both cancel their respective sitters. Note: This was the seventh episode made, but was held for later airing because of editing issues.
28	28	"Dennis and the Starlings"	Charles Barton	William Cowley & Peggy Chantler	May 8, 1960
Mr. Wilson has a yard full of starlings that he desperately wants to get rid of, so he hires a professional named Mr. Prince (Forrest Lewis) to do the job. Dennis wants to help, so he puts liver up in the tree thinking that will make the birds leave. Mr. Prince has a record that when played will make the starlings fly away. Dennis accidentally breaks the record. To cheer everyone up Miss Cathcart (Mary Wickes) sings a song, and her voice drives the starlings away. Mr. Wilson, thinking he will have peace and quiet, now must deal with a tree full of meowing cats who went there for the liver.
29	29	"The Party Line"	Charles Barton	William Cowley & Peggy Chantler & George Tibbles	May 15, 1960
Ed and Catherine Driscoll (Arthur Hanson & June Dayton) are new neighbors, but problems arise as their phone is on a shared line with the Mitchells. Henry gets angry at Mr. Driscoll for monopolizing the line, not realizing that Dennis and his friends actually were the ones using it, and furthermore that Mr. Driscoll is a valued client of Henry's company. Note: Mr. and Mrs. Wilson do not appear in this episode. This is the last episode until "The Big Basketball Game" in season 4 that does not include either a Mr. or Mrs. Wilson character.
30	30	"Dennis by Proxy"	Charles Barton	George Tibbles	May 22, 1960
Dennis hears that the city is tearing down Mr. Dorfman's "Postman's Rest" bench in favor of a parking lot. Dennis, Tommy, Margaret and Stewart try to build him a new one but Dennis gets sick and has to stay in the house and watch the other 3 try to build the bench.
31	31	"Dennis Runs Away"	William D. Russell	William Cowley & Peggy Chantler	May 29, 1960
Dennis has nobody to play with after Joey goes home. With everyone else busy, and since nobody can drive him, he decides to walk to his grandfather's house but is stopped by the police. At the police station, he refuses to tell his name, is given ice cream, and causes further havoc including putting cement in Mr. Wilson's bowling ball and accidentally handcuffing an officer. Note: This was the fourth episode made, but was held for later airing because of editing issues. Billy Booth appeared but was not called "Tommy" even though the character of Tommy Anderson already was established. This is the final appearance in the series of Joey McDonald, who was played by Gil Smith, although he occasionally was mentioned in the second season and as late as the fourth-season episode "First Editions."
32	32	"Miss Cathcart's Sunsuit"	Norman Abbott	William Cowley & Peggy Chantler	June 12, 1960
Dennis and Tommy's efforts to sell Valentine's Day cards in July cause problems for Miss Cathcart, Mr. Dorfman, Mr. Wilson, and even Mr. Carlson (Tyler McVey) the gardener. Mr. Wilson buys the rest of Dennis' cards, hoping to avoid more trouble. Now all the teenagers in the town want Valentine's cards, causing a run on them. They all go to Mr. Wilson's house causing him to end up in trouble with the police.

Season 2 (1960–61)

No. overall	No. in season	Title	Directed by	Written by	Original air date
33	1	"Out of Retirement"	William D. Russell	William Cowley & Peggy Chantler	October 2, 1960
Mr. Wilson's former employer, Mr. Cramer (Vinton Hayworth), offers him an executive position at his old company, but it will require him to relocate to Pittsburgh. Dennis doesn't want him to go, but when Mr. Wilson decides to take the job, Dennis blames himself and runs away from home.
34	2	"Dennis and the Wedding"	William D. Russell	Louella MacFarlane	October 9, 1960
Mr. Wilson's niece Georgiana is getting married and asks Dennis to be the ring bearer. Mr. Wilson is nervous about hosting his niece's upcoming wedding, especially with Dennis being involved. Dennis does manage to disrupt the wedding rehearsal, but things run smoothly after that. Elinor Donahue appears as Mr. Wilson's niece. Note: Despite the appearances of two of Mr. Wilson's sisters and mentions of Mrs. Wilson's mother and at least two sisters in the first season, as well as the existence of George Wilson's brother John, Mr. Wilson refers to he and Martha being "the only family (his niece) has left" as the reason why they are hosting the wedding.
35	3	"Dennis and the Radio Set"	William D. Russell	James Fonda	October 16, 1960
Mr. Wilson gives Dennis an old radio set that he accidentally bid on at an auction, and it turns out to have cash hidden inside. After an ad is put in the paper, people appear, each of them claiming to be the owner. Ellen Corby appears as Miss Douglas, the rightful owner. Hal Smith appears as the Auctioneer.
36	4	"Dennis and the Ham-pher"	William D. Russell	Phil Leslie	October 23, 1960
Dennis gets what he thinks is a hamster, but it turns out to be a gopher that escapes from its cage and almost ruins Mr. Wilson's yard.
37	5	"The Stock Certificate"	William D. Russell	Phil Leslie	October 30, 1960
Mr. Wilson has a stock certificate worth $500 and safeguards it inside his phone book, which is then accidentally given away for disposal with thousands of identical books. After the warehouse is carefully searched in vain, it is discovered Dennis had removed the certificate earlier to decorate his treehouse.
38	6	"Man of the House"	William D. Russell	Louella MacFarlane	November 6, 1960
With his father away on a business trip and his mother sick in bed with a cold, Dennis has to be the "man of the house". A cleaning woman is hired (Olive Carey), but quickly quits, without Alice knowing. This leaves Dennis doing the laundry with Margaret's help, and arranging a dinner party with his friends in connection with a sales pitch. Alan Hewitt appears as Alistair St. Clair, the salesman that set up the dinner. Note: Sylvia Field does not appear in this episode.
39	7	"The Rock Collection"	William D. Russell	William Cowley & Peggy Chantler	November 13, 1960
To shoo Dennis away, Wilson suggests he starts rock collecting, even offering a contest for him and the other boys for the best collection. At the same time, he's trying to sell a scruffy real estate lot nearby. Dennis's father innocently spreads some valueless gold ore samples on the property for Dennis to find for his collection, but potential buyers think it might be actual Gold.
40	8	"Henry and Togetherness"	William D. Russell	William Cowley & Peggy Chantler	November 20, 1960
Mr. Wilson tricks Henry out of playing golf so that he'll spend more time with Dennis, and that way Dennis won't bother Mr. Wilson all day. Meanwhile, Dennis and Tommy try to deal with a hole Dennis accidentally put in the fish tank.
41	9	"Paint-up, Clean-up Week"	William D. Russell	Dick Conway & Roland MacLane	November 27, 1960
The town holds a Paint-up, Clean-up Week campaign, and everyone spruces up their place. Dennis wants to help but gets in Mr. Wilson's way. He gives Dennis a bucket of red paint for his wagon to keep him busy. Dennis spills the paint on the curb in front of Mr. Wilson's house. He decides to paint the rest of the curb to make it look better. Sgt. Mooney comes by and Mr. Wilson gets blamed for it. Note: This episode along with two others, "Mr. Wilson's Uncle" and "Community Picnic" was transcribed by Hank Ketcham into a special edition comic book called "Dennis the Menace Television Special".
42	10	"Dennis Learns to Whistle"	William D. Russell	Story by : James Fonda Teleplay by : Phil Leslie	December 4, 1960
Both Dennis and Mr. Wilson are ashamed that they have never learned to whistle, and try everything they can think of, including eating very sour cherries, to be able to do so. Note: This episode marks Robert John Pittman's first appearance in the series, though he was not yet credited as Seymour. He appeared as Harold's little brother in "Dennis' Allowance" and Rikki in "Dennis Goes to Camp" and did not play Seymour until "The Fortune Cookie."
43	11	"The Raffle Ticket"	William D. Russell	Hannibal Coons & James Fonda	December 18, 1960
Mr. Wilson is conducting a car raffle for his lodge, and Dennis wants to win the car for his mother. Through a mixup, Mrs. Wilson gives Dennis what turns out to be the winning ticket which had originally been bought by her husband. Dennis proceeds to sell that ticket to Mrs. Courtland (Lurene Tuttle). She is so grateful to Dennis, she gives him her old car, a Baker Electric to give to his mother. Meanwhile, Henry had already bought Alice a new car.
44	12	"The Christmas Horse"	William D. Russell	William Cowley & Peggy Chantler	December 25, 1960
Dennis is sure that he's going to get a horse for Christmas, even though his parents repeatedly tell him that he isn't. Then Dennis hears that Johnny Fleming, another boy in the neighborhood, has gotten a pony -- and he heads there to claim it, certain Santa must have delivered it to the wrong house. Dennis does a lot of Christmas gift trading to try and get the horse. Henry Beckman and Irene Vernon appear as Johnny's parents.
45	13	"Dennis' Allowance"	William D. Russell	Budd Grossman	January 1, 1961
Dennis asks his father for an allowance of $.25 per week. Henry says he'll give it to him with the condition that he learns the value of money first by earning it himself. Dennis and Tommy start a dog washing business, a golf course in the front yard, a pet cemetery, with none of the ideas working out. Eventually, Henry learns giving Dennis an allowance would have been cheaper in the long run.
46	14	"Dennis' Penny Collection"	William D. Russell	Hannibal Coons	January 8, 1961
Mr. Wilson helps Dennis start a penny collection, hoping it will preoccupy him quietly indoors. However, Dennis repeatedly pesters Mr. Quigley, the grocer, for rolls of coins and spills them on the floor of the store. Then he tries to get into an armored car to look for pennies. In the course of trying to stop Dennis, Mr. Wilson gets arrested because it appears as though he's trying to break in.
47	15	"Dennis, the Campaign Manager"	William D. Russell	Louella MacFarlane	January 15, 1961
Dennis convinces Mr. Wilson to run for park commissioner so that he'll open the park all week long instead of just the weekend. Dennis goes to the local TV station and convinces them to put Mr. Wilson on the "Around The Town" show. Just as a TV camera crew arrives at the Wilson's home, angry neighbors burst in, complaining of Dennis's campaign signs that have been placed all over their properties. Walter Reed appears as Mike Thompson, the host of the TV show. Jane Nigh appears as Miss Rawlings, who works at the TV station.
48	16	"Miss Cathcart's Friend"	William D. Russell	Arnold Peyser & Lois Peyser	January 22, 1961
Dennis would like to find Miss Cathcart a best friend, so he wants to get her a dog named Arthur from the pound. Dennis tells Miss Cathcart that Arthur will be by for dinner later on. However, Arthur Prilych (John Zaremba), the dog's owner is looking for him and ends up showing up at Miss Cathcart's house before Dennis brings the dog over to her. She mistakenly thinks that the man is the friend instead of the dog. Mel Blanc of cartoon fame has a major role as the dog pound owner.
49	17	"Pythias Was a Piker"	William D. Russell	Phil Leslie	January 29, 1961
Dennis tells Mr. Wilson that he is writing a school composition entitled "My Best Friend" and it will be about him. Mr. Wilson tells Dennis to go away and Mrs. Elkins hears him. To prove to Mrs. Elkins that he doesn't hate children, Mr. Wilson goes to great lengths to be kind to Dennis and be his best friend.
50	18	"Dennis and the Saxophone"	William D. Russell	William Cowley & Peggy Chantler	February 5, 1961
Tommy has a saxophone that he doesn't want, so Dennis wants to buy it from Tommy's mother. When Mr. Wilson learns that Dennis is going to ask Henry to buy it for him, Mr. Wilson tries to talk Henry out of it.
51	19	"Wilson Sleeps Over"	William D. Russell	Budd Grossman	February 12, 1961
Dennis accidentally knocks over a bottle which fumigates the Wilsons' house, so the Wilsons plan to stay at the Mitchells' for the night. When Dennis learns that Mr. Wilson has been known to walk in his sleep, he hopes to take a picture of it to show his friends. That night, Tommy sneaks over to Dennis' house and they witness Mr. Wilson walking in his sleep. Don C. Harvey appears as a police officer.
52	20	"Dennis' Birthday"	William D. Russell	Louella MacFarlane	February 19, 1961
Mr. Wilson is in charge of getting a celebrity for a lodge party benefit. Because he can't find one, he plans on doing his magic act to fill in. Dennis wants Mr. Wilson to perform his act at Dennis's birthday party. Mr. Wilson is reluctant to do so - until he learns that actress Spring Byington (who had starred on CBS' December Bride from 1954-59) will be at Dennis' party as she is related to one of his friends. She agrees to appear at the lodge party.
53	21	"Dennis Goes to Camp"	William D. Russell	Phil Leslie	February 26, 1961
Mr. Wilson takes Dennis and several friends to a camp open house, and they exhaust him with a day of long hikes and activity. As they prepare to return home, they are told they will be stranded there for a week because a storm has taken out a bridge.
54	22	"Dennis' Tool Chest"	William D. Russell	Story by : Hannibal Coons Teleplay by : William Conley	March 5, 1961
Mr. Wilson has his car trunk open to use the car jack to change a flat tire. While no one is looking, Mrs. Cathcart's cat jumps in and then Dennis closes the trunk. Mr. Wilson can't figure out what the noise coming from his car is. While trying to fix his car, he opens the trunk and the cat escapes without him seeing it. Mr. Wilson then replaces a trellis on the side of his house and the cat sneaks into an air duct that was exposed. He uses some of Dennis' tools to break a hole in the wall to rescue the cat.
55	23	"The Going Away Gift"	William D. Russell	Phil Leslie	March 12, 1961
Dennis gets his mother a going-away present, jewelry, and hides it on Mr. Wilson's closet shelf. Mrs. Wilson finds it and thinks it is a gift for her from Mr. Wilson. Note: Within the show's canon, Alice Mitchell was leaving on an extended trip to help her father mend from surgery. In real life, Gloria Henry left for nine episodes to go on maternity leave although she filmed a few short segments to be shown while she was gone. Grandma Mitchell, Henry's mother, who was played by Kathleen Mulqueen, stayed with the Mitchells for the next several weeks.
56	24	"Dennis and the Fishing Rod"	William D. Russell	Mort R. Lewis	March 19, 1961
Dennis wants to buy a fishing rod for his father and tries to purchase it with a $50.00 Confederate bill he had found in a ragged ancestral uniform his grandmother lent him. Mr. Wilson has Jerry Richman (Stanley Adams), who is a coin collector, over to his house. Dennis comes over and when Mr. Wilson is out of the room, Jerry offers Dennis $5 for the Confederate bill. When Mr. Wilson finds out what happened, he shames Jerry into giving Dennis the bill back. Mr. Wilson then gives Dennis what the bill is really worth.
57	25	"Dennis and the Good Example"	William D. Russell	Louella MacFarlane	March 26, 1961
Dennis sees a mynah bird he wants in a pet store. Mr. Bergstrom (Jon Lormer), the store owner, says he can have the bird free if he buys the bird cage. Dennis knows that once his dad sees his report card, he won't get it. He talks to his father, and he promises to be good and study for school if his dad gets him a bird cage as a reward. Mr. and Mrs. Wilson go to Dr. Alfred Simpson (Alan Hewitt), who wants to put Mrs. Wilson on a diet. He decides George must go on the diet as well. Dennis gets better grades and also the bird, which he teaches to say "Hi, George".
58	26	"Dennis' Obligation"	William D. Russell	Arnold Peyser & Lois Peyser	April 2, 1961
Alice is still visiting with her father. Dennis' teacher asks students to take home the school pets over the weekend while the heat is off at school. Dennis brings home chicken eggs, but then the electricity goes off in the Mitchell home and the incubator light goes out. Dennis takes the eggs to Mr. Wilson's house, where they start to hatch.
59	27	"The Dog Trainer"	William D. Russell	Budd Grossman	April 9, 1961
Mr. Wilson decides to teach his dog, Fremont, a few commands. Dennis asks if he can help train Fremont, and Mr. Wilson allows him to do all the training. After the dog is trained, Fremont only responds to Dennis and not to Mr Wilson. In a dream scene, Dennis and Fremont try to teach Mr. Wilson (dressed as a dog) tricks. Mr. Wilson, sadly, gives Fremont to Dennis because he believes Fremont doesn't like him anymore. Dennis comes up with a way for Fremont to want to go back to George.
60	28	"Woodman, Spare That Tree"	Charles Barton	Phil Leslie	April 16, 1961
Dennis feeds crows in the backyard, causing noise while Mr. Wilson is on the phone trying to argue for keeping an old tree from being chopped down. One of the crows grabs a hundred dollar bill from Mr. Wilson and flies off. Dennis and Tommy decide to try to follow the crows to where they live and get Mr. Wilson's money back. They find the money in a crow's nest in the old tree. Mr. Wilson climbs the tree just as the men who are going to cut it down show up.
61	29	"The Boy Wonder"	Charles Barton	Louella MacFarlane	April 23, 1961
Mr. Wilson attempts to build a backyard barbecue and hires Dennis' friend, Fred Baines. His teenage helper plays loud music on a record player, which annoys Mr. Wilson. He buys a portable radio with an earphone for Fred. Dennis' wandering pet turtle gets trapped in the barbecue. Dennis calls the fire department and they tear down part of the barbecue to save the turtle. When finally finished, Mr. Wilson hears the radio he gave Fred start to play music from inside the barbecue and he tears down part of it once again.
62	30	"The Soapbox Derby"	William D. Russell	Keith Fowler & Phil Leslie	April 30, 1961
Johnny Brady is building a car for a soap box race, so Dennis and Tommy decide to build one also. Henry and Mr. Wilson help. Before the race, Mr. Wilson gets in the car to make a last second change. Dennis removes the starter bar when he is asked for a piece of wood and Mr. Wilson wins the race.
63	31	"Dennis and the Camera"	William D. Russell	John Elliotte	May 7, 1961
Mr. Wilson is supposed to take a picture of a plant that blooms briefly at night, but ends up dozing off when the time comes. Luckily, Dennis takes the picture of the flower for him.
64	32	"Dennis and the Miracle Plant Food"	William D. Russell	Budd Grossman	May 14, 1961
Dennis accidentally steps on one of Mr. Wilson's plants. He buys Mr. Wilson a replacement and plants it in his flower bed without Mr. Wilson knowing. When Mr. Wilson sees the plant, which is much larger than the original, he is convinced that the new miracle plant food he invented is the cause of the growth. Note: This episode marks Kathleen Mulqueen's final appearance as Grandma Mitchell.
65	33	"Dennis' Newspaper"	William D. Russell	Keith Fowler & Phil Leslie	May 21, 1961
Dennis and Tommy start their own newspaper, "The Mr. Wilson News", in which they write about Mr. Wilson's daily activities. But when they overhear him playfully telling Mrs. Wilson that he'd give $20 for a raccoon coat like the one he had in college, the boys tell Mr. Krinkie, who in turn prints this information in the local newspaper. In no time, the Wilson household is overflowing with raccoon coats from sellers from all over town. Note: This was Gloria Henry's return to the show after missing nine episodes for maternity leave.
66	34	"Mr. Wilson's Paradise"	William D. Russell	Louella MacFarlane	May 28, 1961
After helping Dennis research a school report about an island off the coast of Mexico --"the Isle of Happiness"-- Mr. Wilson decides he and his wife should spend a year there. But they quickly change their minds when they see how Mr. Hubbard (Vaughn Taylor), the schoolteacher who will rent their home while they're away, plans to change the house. Then they learn that their niece, Georgianna, is going to have a baby. Mr. Hubbard refuses to back out of the deal, until he hears Dennis read his report, and decides he will go to the Isle of Happiness instead.
67	35	"The Fortune Cookie"	William D. Russell	Budd Grossman	June 4, 1961
The Mitchells and Wilsons have tea together to celebrate George's good fortune in selling his coin collection. They each open a fortune cookie, and George's seems to indicate a bad day for him tomorrow. Dennis and his friends are determined to protect him from harm and do manage to help him from being ripped off by the buyer of the coins.
68	36	"The Pioneers"	William D. Russell	Story by : Arnold Peyser & Lois Peyser Teleplay by : Arnold Peyser & Lois Peyser & Phil Leslie	June 11, 1961
Mr. Krinkie writes an article in his newspaper about how the man of today could not match their pioneer ancestors. Mr. Wilson, Henry and Dennis try to prove they can survive three days in the wilderness, armed only with a knife, an ax, and a fishing rod - plus a tempting large basket of food, which is only supposed to be for Dennis. They just about give up, when Dennis finds out that a large milk can that Mr. Wilson had caught earlier was actually full of fish.
69	37	"Father's Day for Mr. Wilson"	William D. Russell	Keith Fowler & Phil Leslie	June 18, 1961
After celebrating Father's Day with his father, Dennis decides Mr. Wilson needs his own Father's Day. Dennis tries to do everything to have George enjoy his day. Luckily, one of Dennis' gifts helps George win a lawsuit concerning his dog, Fremont. Willis Bouchey appears as Lawyer John McRae.
70	38	"Dennis and the Picnic"	William D. Russell	Louella MacFarlane	June 25, 1961
Alice and Dennis were going to go on a picnic without Henry, because he had to work on a project. Before they can go Henry finds a large envelope in the gutter outside his house and is surprised to find it is full of money. Henry asks George to go with him to the police to turn it in, but it turns out the money is counterfeit. Dennis calls Mr. Krinkie of the Chronicle to get the story in the paper, making Henry a bit of a local hero.

Season 3 (1961–62)

No. overall	No. in season	Title	Directed by	Written by	Original air date
71	1	"Trouble from Mars"	Charles Barton	Budd Grossman	October 1, 1961
Mr. Wilson goes for a haircut in preparation for a magazine taking his picture for an article. Unfortunately, Dennis and his friends, dressed in space suits, scare the barber (Forrest Lewis) and the back of George's hair is accidentally shaved off. Mr. Wilson accidentally gets Dennis' space helmet stuck on his head. A fire truck is summoned, which arrives just as photographers from "Graceful Retirement" magazine also arrive at the Wilson house.
72	2	"Best Neighbor"	Charles Barton	Russell Beggs	October 8, 1961
Mr. Wilson takes Dennis camping on a cold and windy mountainside, so that Dennis will be able to join the Junior Pathfinders. In doing so, Mr. Wilson hopes to improve his own odds of winning a Best Citizen award. Due to his work on the Neighborhood Improvement Committee, Henry is also nominated for the award. Mr. Wilson wins.
73	3	"Keep Off the Grass"	Charles Barton	Phil Leslie & Keith Fowler	October 15, 1961
A new regulation says no one can walk on the grass in the park. When a policeman chases Dennis and his friends off the grass, Henry talks to the policeman. Henry gets a ticket for walking on the grass in order to talk to the policeman. Mr. Wilson talks Henry into fighting the ticket and thanks to Dennis, they win. Edgar Stehli appears as Judge Andrew Strickland.
74	4	"Mr. Wilson's Safe"	Charles Barton	Budd Grossman	October 22, 1961
Dennis uses numbers for a football play that are the combination to Mr. Wilson's safe, so Mr. Wilson and Henry get Dennis so confused that he forgets the combination. Unfortunately, Mr. Wilson forgets it, as well. He has the deed to property that he and the Mitchell's own that they want to sell to Mr. Merrivale (Will Wright). Mr. Wilson tries to hypnotize Dennis to get the combination, but winds up hypnotizing himself. While under, he reveals the combination just as Mr. Merrivale shows up.
75	5	"Haunted House"	Charles Barton	Budd Grossman	October 29, 1961
George and Henry purchase a house as an income property and later find out that it is known to be haunted. Unable to get their money back, they sleep inside to prove that it isn't haunted. Dennis and friends join them and talk to the ghost. Noises they repeatedly hear are finally found to be from a squatter in the basement trying to scare them away. Note: The same house later is referenced in "The Bully," after George sells John half of his share in the house. Harvey Korman guest-stars as the real estate agent who sells Wilson and Mitchell the house. Harold Gould guest-stars as the hobo living in the house.
76	6	"The School Play"	Charles Barton	Budd Grossman	November 5, 1961
Chaos ensues when Dennis handcuffs Mr. Wilson to Tommy while rehearsing a school play and there's no key. With the play about to start, locksmith Buzz (Chubby Johnson) makes a wax impression of the key, but has to go home to finish it. Mr. Wilson and Tommy join the play. Part way through, Buzz is able to unlock them and Mr. Wilson runs out of the room.
77	7	"The Fifty-Thousandth Customer"	James R. Goldstone	Keith Fowler & Phil Leslie	November 12, 1961
With Mr. Finch (Charles Lane) offering a free five-minute shopping spree for the 50,000th customer at his pharmacy, Mr. Wilson tries to calculate the exact moment that it will happen so that he can walk through the door and claim the prize. Despite all his practicing and planning, Dennis wins. Dennis grabs some special items for the Wilsons and his parents.
78	8	"Dennis and the Pee Wee League"	Charles Barton	Ann Marcus	November 19, 1961
A group of father's make Mr. Wilson the President of the Pee-Wee League, which turns out to be more work then he thought it would be. Mr. Wilson then has to coach Dennis' team because Henry, the team's original coach, becomes ill. He brings Dennis' team back from a 6 - 0 deficit to win.
79	9	"Mr. Wilson's Inheritance"	Charles Barton	Arnold Peyser & Lois Peyser	November 26, 1961
Mr. Wilson believes he's a millionaire when he inherits his aunt's estate and thinks about starting a charitable foundation. Through a misunderstanding, Mr. Bierschmidt (Gordon Jones), a contractor, thinks Mr. Wilson has ordered a new foundation dug under his house, and begins the project while the Wilson's are away. Mr. Wilson buys a fancy sports car and neighbors come by with worthy causes. He receives a telegram saying there is no money. But, in the trenches Bierschmidt dug up, Dennis finds saber tiger teeth fossils.
80	10	"Dennis Is a Genius"	Charles Barton	Budd Grossman	December 3, 1961
Dennis' school teacher Miss Perkins (Elizabeth Harrower) stops by to tell the Mitchells that Dennis scored high on an IQ test at school and that he is a genius. A Dr. Heydon (James Millhollin) comes by to test Dennis and believes him to be of high intelligence as well. In a dream sequence, Mr. Wilson is a classmate of Dennis' friends and Dennis is the teacher. The Mitchell's fear nothing will be the same for Dennis and are thrilled later when they find out there was a mistake in the grading.
81	11	"The Lucky Piece"	Charles Barton	Phil Leslie & Keith Fowler	December 17, 1961
Mr. Wilson tricks Dennis into taking a silver coin that reads "good luck" and has a horseshoe on it instead of a half-dollar that he owes Dennis for mowing his lawn. Dennis thinks it is a lucky coin, and he seems to have a lot of good things happening to him. In reality, Mrs. Wilson sets up all the luck in the hopes of teaching Mr. Wilson a lesson.
82	12	"The Fifteen-Foot Christmas Tree"	Charles Barton	Phil Leslie & Keith Fowler	December 24, 1961
The Mitchell's have a small Christmas tree that they bought from Mr. Quigley. Mr. Wilson says that they need a big real tree. Dennis, Henry, and Mr. Wilson go out in the woods and cut down a big Christmas tree that almost ends up getting destroyed before they get it home. Once home, Mr. Wilson proceeds to prune the tree and really makes a mess of it. Mr. Quigley brings by the little tree that Henry returned earlier.
83	13	"Dennis' Bank Account"	Charles Barton	Phil Leslie & Keith Fowler	December 31, 1961
After Mr. Wilson takes a temporary position at the bank, Dennis opens up a bank account and stops at the bank daily to check on his money and keep Mr. Wilson company. Paul Maxey appears as Dudley Yates, the Bank President. John Fiedler appears as Mr. Clute, a bank teller.
84	14	"Through Thick and Thin"	Charles Barton	Russell Beggs	January 7, 1962
Mr. Krinkie is writing an article about Mr. Wilson and hopes to find something embarrassing about him. The Mitchell's host a circus act for a cub scout event. Dennis convinces Mr. Wilson to be the lion. He tells Mr. Wilson that nobody has to know he's the one inside the costume. Krinkie sends a photographer to the event. When Mr. Wilson takes a bow, his lion head falls off and the photographer gets a picture of him.
85	15	"Calling All Bird Lovers"	Charles Barton	Russell Beggs	January 14, 1962
Hoping to be selected as a delegate to a bird lovers' convention, Mr. Wilson hosts a reception for the organization at his home. The program includes Mrs. Hutton (Estelle Winwood) who does actual bird calls. However, after seeing a sign for the meeting in a music shop window, ("Remember the Bird"), two beatniks think the occasion is to honor a music legend, and they show up to turn it into a jazz program. Parley Baer appears as Mr. Pindyck, the head of the state's Bird Lovers Society.
86	16	"Silence Is Golden"	Charles Barton	Phil Leslie & Keith Fowler	January 21, 1962
Mr. Wilson agrees to give Dennis his magnifying glass as long as he doesn't say a word to him or around him for the rest of the day. Henry and Alice had also told Dennis that he talks too much, so he doesn't speak around them, either. When Mrs. Elkins accuses Mr. Wilson of tying a tin can to her cat's tail, he begs Dennis to tell her they were together all day. At first Dennis refuses, because he doesn't want to lose the bet. Mr. Wilson gives Dennis the magnifying glass, and Dennis tells Mrs. Elkins it was Johnny Brady that did that to her cat.
87	17	"Dennis Has a Fling"	Charles Barton	John Elliotte & Herbert Finn	January 28, 1962
Dennis' school is putting on a play about all nations. Each student has to ask someone to represent a different nationality to be in the play. Dennis asks Mr. Wilson to represent Scotland, but he is not interested. Dennis then asks Mr. MacTavish (Tudor Owen), who accepts. Once Mr. Wilson finds out there are prizes involved, he wants to be in it. Dennis asks Mr. Krinkie to decide after they each put on a performance. A letter arrives stating that Mr. Wilson is actually Irish. Special Guest Star: Susan Jones, 1961 Miss Scotland.
88	18	"Frog Jumping Contest"	Charles Barton	Budd Grossman	February 4, 1962
Dennis enters his frog Sam in a frog-jumping contest with Mr. Wilson as his partner. Mr. Wilson bets Sgt. Mooney that Dennis' frog will beat Mooney's. While practicing, Sam doesn't jump as far as usual. Dennis takes it to Dr. Johnson (Alan Hewitt), an actual doctor, because the vet is out of town. Dr. Johnson gives Sam a vitamin shot and says Sam might need a friend. At the contest, Sam appears to like Mooney's frog and makes a record setting jump.
89	19	"Where There's a Will"	Charles Barton	Budd Grossman	February 11, 1962
It's Mr. Wilson's birthday and he decides to leave Dennis a gold watch in his will. Soon after, Mr. Wilson begins to feel old and is convinced that he has a short time to live. Dennis in return, goes to Mr. Phillips (Ray Teal), an attorney, to have a will drawn up so he can leave his favorite things to Mr. Wilson. Dennis gives Mr. Wilson a copy of his will as a birthday gift. He is so touched that he gives Dennis the watch. Note: This episode aired six days before the actor playing Mr. Wilson, Joseph Kearns, actually died. He does appear in the next several episodes because they were made prior to his death.
90	20	"Mr. Wilson's Uncle"	Charles Barton	Budd Grossman	February 18, 1962
George is expecting a visit from his Uncle Ned (Edward Everett Horton), a rocker-chair addict. When Ned arrives, he is active, fit, and energetic. Ned forces George and Henry into a fitness program. As the two struggle to keep up, they plot a way to end the exercises. Note: This episode aired the day after the actor playing Mr. Wilson, Joseph Kearns, died at age 55 following a stroke.
91	21	"A Quiet Evening"	Charles Barton	Budd Grossman	February 25, 1962
Mr. Wilson plans to have a quiet evening at home with his coin collection. His plans change when Henry needs a sitter for Dennis. Mr. Wilson is talked into being a sitter for Dennis, Margaret, and Seymour. Seymour finds one of Mr. Wilson's rare dimes, goes down the street and buys a candy bar from a vending machine. John Astin appears as the policeman who arrests Wilson trying to retrieve his valuable coin from the vending machine. Blooper: Alice refers to Margaret's mother as "Mrs. Moore," even though Margaret's last name was established as Wade during the first season. Margaret also says her last name is "Harrington" in the fourth season.
92	22	"The Private Eye"	Charles Barton	Phil Leslie & Keith Fowler	March 4, 1962
While Mr. Wilson's arm is stuck in a public mailbox trying to retrieve an embarrassing letter, his wallet is taken by a passing pickpocket (William "Billy" Benedict). Dennis gets a new Private Eye Detective Kit and has fun with Tommy solving crimes. When they hear that Mr. Wilson's wallet was stolen, Dennis and Tommy use their new found skills to find the culprit. Bob Hastings appears as Officer Watts.
93	23	"Mr. Wilson's Housekeeper"	Charles Barton	Phil Leslie & Keith Fowler	March 11, 1962
To help Martha, Mr. Wilson hires Mrs. Davis (Jean Stapleton), a housekeeper. But this backfires when the stern housekeeper won't let Mrs. Wilson do anything, and she constantly criticizes everything George does. Each thinks the other is happy with the situation and are afraid to say anything. Mr. Wilson plots different ways to get her to quit. Then he finds out from the milkman that she is afraid of mice. Dennis is taking care of several mice as a school project and Mr. Wilson uses them to frighten Mrs. Davis.
94	24	"A Dog's Life"	Charles Barton	John Elliotte & Herbert Finn	March 18, 1962
Mr. Quigley (Willard Waterman) tries to keep a big shaggy dog out of his store. He ties some bologna to the back of Mr. Wilson's car, and when Mr. Wilson leaves the store, the dog follows him home. Mr. Wilson tries to keep the dog out of his yard and house without much luck.
95	25	"Dennis' Documentary Film"	Charles Barton	Phil Leslie & Keith Fowler	March 25, 1962
Dennis has a history project for school to take pictures of historical places around town, and then write a composition about them. Mrs. Wilson suggests Mr. Wilson help Dennis because he has a movie camera. They go around town filming historical buildings and various prominent people. They are then to show the film at the next PTA meeting. Dennis has cards to read to go along with the movie, but drops them and they are now out of order. Between editing mistakes and Dennis' reading the wrong cards, many people there are either laughing or insulted.
96	26	"Horseless Carriage Club"	Charles Barton	Phil Leslie & Keith Fowler	April 1, 1962
George buys a 1912 Winton to enter into the Horseless Carriage Road Race with the intent of winning the race and becoming president of he and Henry's chapter of the Horseless Carriage Club. Dennis talks Mr. Wilson into taking him & his friends on a drive in the car the day before the race. A change of plans occurs and the race gets moved up one day, so Mr. Wilson has to cancel the trip with the children. Feeling guilty, Mr. Wilson takes the children on the trip and misses the race. When Senator Washburn, who was a judge of the race hears about Mr. Wilson's gesture, he makes him the president of the Horseless Carriage Club.
97	27	"Junior Pathfinders Ride Again"	Charles Barton	Russell Beggs	April 8, 1962
An Indian fire-starting demonstration is to take place for Dennis' Junior Pathfinders club, but the person who is to do perform the demonstration hurts his back. Mr. Wilson, trying to get into the Pioneer Club, is volunteered to be the replacement Indian chief and has to start a fire by rubbing together two sticks. Fearing he might not be able to start the fire, Mr. Wilson has his cousin Fillmore, a chemist, put something on the sticks to insure a fire. This leads to an unexpected result. Note: Mr. Wilson says early in the episode, "I'm his only great-nephew," referring to ancestor Jeremiah Wilson. This can be taken as a possibly false boast given not only the appearance in this episode of his cousin Fillmore, who shares the Wilson surname, but also in that just six episodes later, Mr. Wilson's brother, John, appears in the series for the first time.
98	28	"The Treasure Chest"	Charles Barton	John Elliotte & Herbert Finn	April 15, 1962
Mr. Wilson buys a treasure chest at an auction thinking that it has a pirate's treasure in it. When he gets it open and discovers nothing valuable, he tells Dennis that he can do whatever he wants with it. Dennis & Tommy play pirates with the items in the chest, and even draw up a map to a pretend treasure. Mr. Wilson later finds it and thinks it is real. He gets several friends to invest in a trip to hunt for the treasure. Then, Dennis tells him he drew the map.
99	29	"Wilson Goes to the Dentist"	Charles Barton	Budd Grossman	April 29, 1962
Dennis, with a loose tooth, wants to visit a new dentist (Arthur Malet) who gives presents to first-time patients. But when Dennis's tooth falls out before he can go to the dentist, he convinces Mr. Wilson to go in his place so Dennis can still get a present.
100	30	"The Man Next Door"	Charles Barton	Budd Grossman	May 6, 1962
Mr. Wilson installs his own burglar alarm after a series of burglaries in the neighborhood. Dennis and Mr. Wilson think the new neighbor is the stocking bandit. While trying to prove the neighbor is the bandit, Mr. Wilson gets stuck in their basement window. Note: This is the last episode to feature Joseph Kearns as Mr. George Wilson.
101	31	"Dennis and the Dodger"	Charles Barton	John Elliotte & Herbert Finn	May 13, 1962
Mr. Quigley, though lacking experience, is named coach of the town's pee-wee baseball team, hoping it will help advertise his store. The mayor agrees to give the team new uniforms if Quigley can get Sandy Koufax and the Dodgers to play an exhibition game in town. Quigley is nervous around Sandy and the kids begin to question if he can really coach their team. That is until Quigley hits a home run off Sandy. Note: Mrs. Wilson appears in this episode while Mr. Wilson does not due to the fact Joseph Kearns was ill after suffering a stroke.
102	32	"Dennis' Lovesick Friend"	Charles Barton	Phil Leslie & Keith Fowler	May 20, 1962
George's Uncle Ned visits while George is out of town. He decides to plant flowers to win a flower contest in the summer, but he hurts his back. Dennis gets an older friend named Jerry to help Uncle Ned, but Jerry keeps thinking about his ex-girlfriend Helen (Cheryl Holdridge) and gets nothing done. Helen makes up with Jerry and helps with the bulbs, but she plants them all upside down. Note: Mrs. Wilson appears in this episode while Mr. Wilson does not due to the death of Joseph Kearns.
103	33	"John Wilson's Cushion"	Charles Barton	Phil Leslie & Keith Fowler	May 27, 1962
George Wilson's brother, John, comes to stay with Martha while George is out of town. John is a writer, but has trouble working without his old seat cushion. Dennis makes it his goal to make a cushion for John. Dennis also helps John get out of speaking at a lecture. Elvia Allman appears as Isabel Tolliver, a woman who wants John to lecture at her Literary Club. Note: This marks Gale Gordon's debut as John Wilson, George's brother. In this episode, however, it is stated that George Wilson is away on business and that John is a guest of the Wilsons. A new title sequence begins that includes Gale Gordon's name.
104	34	"John Wilson Wins a Chicken"	Charles Barton	Budd Grossman	June 3, 1962
After agreeing to sell a rare 1919 dime for $150, John Wilson buys ten raffle tickets from Dennis and ends up winning a chicken. When he wants to cook the chicken for dinner, Dennis and his friends try to talk him out of it. John agrees to spare the chicken. He then believes the chicken swallowed his rare dime, which it didn't. In the end, Henry finds a home for the chicken and John finds his dime.
105	35	"The Bully"	Charles Barton	Budd Grossman	June 10, 1962
After being picked on by Gifford Kelly (Mickey Sholdar), the school bully, Alice makes Dennis promise not to fight. As a result, the bully gives Dennis a black eye. Henry gives Dennis the go-ahead to fight back next time. John Wilson teaches Dennis how to fight and Dennis gives Gifford a black eye. The man that Henry and John hope to rent their investment house to turns out to be Mr. Kelly (Richard Reeves), the bully's father, creating an awkward situation. Note: The house mentioned in this episode, of which John bought half of George's share, is the house Wilson and Mitchell originally bought in "Haunted House."
106	36	"The Club Initiation"	Charles Barton	Phil Leslie & Keith Fowler	June 17, 1962
Dennis wants to join an older boys' club run by a boy named Walter Hooper (Billy Hughes), but in order to do so, he has to go through an initiation. Walter has Dennis find a goat, a derby hat and a bugle. Dennis stores these things in Mr. Wilson's garage. John sees these things and begins to question his sanity, because as fast as Dennis and others put this stuff in the garage, Walter takes them out. John Wilson is planning a round of golf with Dr. Fred Ferguson, but he tells the doctor what he sees. Dr. Ferguson believes John is hallucinating until he sees the goat himself. Note: Frank Cady, who went on to greater fame portraying Sam Drucker on Petticoat Junction and Green Acres, guest stars as Dr. Fred Ferguson. This also is the first mention of Eloise Wilson in the series, although not by name. Portrayed by Sara Seegar, Eloise's character would not join the cast until the next season.
107	37	"The Community Picnic"	Charles Barton	Phil Leslie & Keith Fowler	June 24, 1962
Mr. Brady (Laurence Haddon) and Tiny Hawkins (Russ McCubbin), an employee at his store, challenge Henry and John Wilson to compete against them in the sporting events at an upcoming community picnic. The Brady team and the Wilson team are tied, with the egg toss being the winning event. When Henry gets his hand stuck in a pickle jar, Dennis must fill in. Dennis and John win, but because Dennis inadvertently used a hard boiled egg. They must now tell Brady. Note: This marks the final appearance in the series of Sylvia Field, who played Martha Wilson.
108	38	"Dennis and the Witch Doctor"	Charles Barton	John Elliotte & Herbert Finn	July 1, 1962
John Wilson is writing a magazine article about voodoo. Dennis gets the wrong idea and tells the whole neighborhood that John is a witch doctor. Some strange occurrences and odd accidents convince his new neighbors that he really is a witch doctor and is out to hex them. John hosts a party to meet all his neighbors, but everyone is afraid to show up. Dennis makes sure that things work out. Note: Martha Wilson does not appear in this episode. Alice states that Martha "has gone back east for a while", presumably to stay with George, although that is never explicitly said.

Season 4 (1962–63)

No. overall	No. in season	Title	Directed by	Written by	Original air date
109	1	"The Chinese Girl"	Charles Barton	Budd Grossman	September 30, 1962
Dennis becomes a fast friend of Sen Yuen (Cherylene Lee), a girl from British Hong Kong, who is staying with the Wilsons. Margaret becomes jealous of Dennis' attention to her. After Sen Yuen kisses Dennis, Mr. Wilson tells Dennis that Chinese girls often marry very young. When Mr. Yuen comes by, Dennis tells everyone he can't marry Sen Yuen as he is already engaged to Margaret. Note: This marks the debut of Eloise Wilson, John Wilson's wife, played by Sara Seegar. They now live in the house formerly occupied by George and Martha, and John states that George and Martha have sold them the house. This marks the last mention of Martha Wilson in the series, and the last mention of George by name.
110	2	"You Go Your Way"	Charles Barton	Clifford Goldsmith & John Elliotte	October 7, 1962
Dennis overhears and repeats part of a conversation between John and Eloise in which they decide to no longer play cards together. Rumors around the neighborhood begin to fly that the Wilsons are splitting up. Miss Cathcart and Miss Tarbell (Alice Pearce) get a makeover and make a play for Mr. Wilson, each hoping to be his girlfriend. Each woman enlists Dennis to find out more about Mr. Wilson's situation. Note: Dennis briefly refers to George Wilson as "the other Mr. Wilson" early in the episode. This is Alice Pearce's first of two appearances as Lucy Tarbell during the fourth season. The second was in "Jane Butterfield Says."
111	3	"Dennis and the Circular Circumstances"	Charles Barton	Herbert Finn	October 14, 1962
With Dennis needing to earn a dollar to buy a toy laser gun but not being old enough for a job delivering circulars for Mrs. Elkins, Mr. Wilson pulls some strings to get Dennis the job (and also get him out of his hair). After quickly finishing the job, some damning evidence leads everyone to believe that Dennis took the money without doing the work. Mr. Wilson manages to straighten everything out.
112	4	"The Little Judge"	Charles Barton	Budd Grossman	October 21, 1962
Sgt. Mooney gives Mr. Wilson a ticket after a complaint from Mrs. Elkins for an alleged violation of a town ordinance. So Mr. Wilson requests a trial, which occurs on "Children's Day in Court" – the day designated for the children of the town to run the court and Dennis is the judge. Mr. Wilson hosts a party for the children in hopes of influencing them in his favor. The children find him not guilty, but he is ordered to buy Banana Splits for all of them, which will cost him more than the original fine. Arthur Peterson Jr. appears as Judge McConnell.
113	5	"Poor Mr. Wilson"	Jeffrey Hayden	Joe Bigelow & Jay Sommers	October 28, 1962
Mr. Wilson's money falls through a hole in his pocket while he was at Quigley's market and thus, he cannot pay Dennis for washing his car. Dennis misinterprets "the market" as referring to the stock market rather than the grocery and as a result, mistakenly thinks Mr. Wilson is broke. Several misunderstandings lead even the Mitchells to believe it. Dennis goes all out to help his friend. This includes buying groceries for the Wilsons and leaving them on their doorstep. Dennis also puts on a show with his friends, using the admission fees to make money for Mr. Wilson.
114	6	"Dennis in Gypsyland"	Charles Barton	John Elliotte & Herbert Finn	November 4, 1962
Mr. Wilson's article about gypsies is returned with the request that he, first, get to know them and research them further before submitting another. Therefore, he dresses in full gypsy attire and travels on a donkey to a local gypsy camp in order to best observe them. He performs a gesture that, unbeknownst to him, is a wedding proposal to a woman at the camp. After Sgt. Mooney, The Mitchell's and Eloise rescue John, Sgt. Mooney inadvertently makes the same wedding proposal gesture. Nestor Paiva appears as Gamali, the leader of the Gypsies. Hugh Sanders appears as the Police Chief.
115	7	"The New Principal"	Charles Barton	Phil Leslie & Keith Fowler	November 11, 1962
Dennis and Mr. Spivey (Leslie Barrett), his school's new principal, get off on the wrong foot after the principal takes a remark about his height the wrong way. He threatens to kick Dennis off the baseball team if he observes any further impudence. Johnny Brady wants Dennis off the team, so he draws an unflattering picture of Mr. Spivey on a paper with Dennis' name on it. This results in Dennis being kicked off the team. With Henry out of town, Mr. Quigley, Mr. Finch and Mr. Wilson each go to see Mr. Spivey pretending to be Dennis' father. Note: This is the last episode that explicitly mentions that John Wilson was not the original Mr. Wilson and had recently bought the house from George. It also is the final appearance in the series of Charles Lane, who played Mr. Finch, owner of the local drugstore. Also in an apparent blooper contradicting information from earlier in the series, Margaret announces to the new principal and the class that her last name is Harrington, instead of the previously-established Wade on both this series and the comic strip.
116	8	"San Diego Safari"	Charles Barton	Joe Bigelow & Jay Sommers	November 18, 1962
Mr. Wilson is selected to pick up a chimpanzee from the San Diego Zoo, so the Wilsons and the Mitchells take a trip there. Confusion results when they try to hide and calm down the agitated chimp, at night, from their motel manager (Forrest Lewis) who is allergic to animals. Arthur Peterson Jr. appears as Mr. Gordon, the zoo director. Bob Hastings appears as a zoo guide.
117	9	"Dennis at Boot Camp"	Charles Barton	John Elliotte	November 25, 1962
Mr. and Mrs. Wilson's nephew Ted (Allan Hunt) visits him in San Diego and gives Mr. Wilson and Dennis a ride in his Navy truck – which is against Navy regulations. Mr. Wilson and Dennis hide in the back of the truck when Mr. Wilson's nephew has to pick up one of his officers. They are unable to get out of the truck and are brought back to the naval base. Their attempt to escape leads to the confusion of Mr. Wilson being mistaken for an expected demolitions expert. Roy Roberts appears as Capt. Stone.
118	10	"Henry's New Job"	Charles Barton	John Elliotte	December 2, 1962
Henry decides to leave his job at Trask Engineering, which means an overseas move for the family. Dennis does what he can to prevent this from happening including running away from home. Mr. Wilson tries to boost Henry's image to Mr. Bromley (Roland Winters), Henry's potential new boss. But in the process, he actually has the opposite effect, and Bromley decides he doesn't want Henry. When Mr. Trask, finds out that Henry has another offer, he fires him. Mr. Wilson and Dennis must work together to get Henry's job back.
119	11	"Wilson's Second Childhood"	Charles Barton	Phil Leslie & Keith Fowler	December 16, 1962
Mr. Wilson hangs out and plays with Dennis and his friends for the day to gather information for a magazine article about the changing behaviors of children. That evening Mr. Wilson throws a weenie roast for the kids. While starting the fire for the grill, Dennis accidentally burns all of John's notes that he took during the day. Note: One of Dennis' friends is played by a young Kurt Russell.
120	12	"Jane Butterfield Says"	Charles Barton	John Elliotte	December 23, 1962
Mr. Wilson takes over an advice-to-the-lovelorn newspaper column for a few weeks. He thinks he will have every single woman in town happily married by the time he finishes. However, complications arise when he unwittingly gives advice to two women - Miss Cathcart and Miss Tarbell - who are out to catch the same man, Sgt. Mooney. Stafford Repp appears as Police Chief Doyle. Note: This episode marks the final appearance in the series of Mary Wickes, who played Esther Cathcart, and the second and final appearance of the fourth season by Alice Pearce as Lucy Tarbell.
121	13	"Dennis and the Hermit"	Charles Barton	Phil Leslie & Keith Fowler	December 30, 1962
Dennis befriends a hermit named Mr. Meekin (guest star Edgar Buchanan), who lives in a shack out in the woods. Mr. Wilson thinks that the hermit fought in the Civil War with Lee, so he tries to get his life story. He winds up chopping a lot of wood for Mr. Meekin in hopes of befriending him as well. When it's finally time to get the hermits story, John finds out that Lee was Mr. Meekin's wife.
122	14	"My Uncle Ned"	Charles Barton	Joe Bigelow & Jay Sommers	January 6, 1963
Mr. Wilson has written a book about his eccentric Uncle Ned (Edward Everett Horton). But Uncle Ned thinks the stories in the book are incorrect, and refuses to sign a release for it to be published. When Uncle Ned finds out from the publisher how much money could be made, he decides to write his own book. Harry Worth appears as Charles D. Winfield , the publisher.
123	15	"Junior Astronaut"	Jeffrey Hayden	Joe Bigelow & Jay Sommers	January 13, 1963
Mr. Wilson is named chairman of a saving-stamps campaign for the Junior Astronauts. As chairman, he arranges a contest at Dennis' school in which the student who collects the most stamps wins a trip to Cape Canaveral to meet an astronaut. Dennis and Johnny Brady are leading the contest, but then Dennis comes down with Chicken Pox and can't continue. But, Dennis does get a special message that makes him feel better. Guest appearance by Project Mercury spokesman "Shorty" Powers as himself. Note: John Wilson says briefly early in the episode, "I wasn't living here last year," the last allusion in the series to his not always having lived at 625 Elm Street. There is no mention of George or Martha Wilson. Also, Dennis's space mission in his dream is named "Menace I." This is perhaps the only time the word "menace" is mentioned during the series.
124	16	"Wilson's Little White Lie"	Charles Barton	Budd Grossman	January 20, 1963
John Wilson pretends to be sick in order to avoid Dennis and to just have a day to himself. However, Dennis is seriously worried by Mr. Wilson's "illness". He spreads the word around town, leading everyone to believe that Mr. Wilson is very sick. John's day becomes full with several concerned visitors. Hardie Albright appears as Dr. Baker. Arthur Malet appears as Reverend Stone.
125	17	"Dennis, the Rain Maker"	Charles Barton	Phil Leslie & Keith Fowler	January 27, 1963
Henry desperately wants to get out of playing golf with his boss and says he'd give $10.00 for a rain storm. Mr. Wilson gives Dennis a book called Secrets of the Indian Rain Dance, and he and his friends decide to give it a try. Meanwhile, Mr. Wilson hopes to buy an old Native American artifact from a Mrs. Schooner. He would like to give it to his Alumni Society and be named Alumnus of the Year. That is, until Dennis looks on the bottom of the artifact and sees "Made in Japan".
126	18	"The Creature with the Big Feet"	Charles Barton	Phil Leslie & Keith Fowler	February 3, 1963
Mr. Wilson sees large footprints in his yard caused by Dennis' new novelty shoes and thinks they may be from a monster that has been reported in the newspaper. Since his editor Mr. Fielding (Vaughn Taylor) wants exciting stories, Mr. Wilson decides to add to the story by hoping to capture the monster. John digs a pit in his backyard and places a pig by it as bait. Things go wrong when numerous people wind up in the yard for various reasons.
127	19	"Dennis, the Confused Cupid"	Charles Barton	Phil Leslie & Keith Fowler	February 10, 1963
Dennis is interested in learning about love. His parents and Mr. and Mrs. Wilson both tell him how wonderful love is, but he just doesn't understand. The Wilson, the Mitchells, and a teenage couple each quarrel after Dennis secretly gives the girl, an old love letter that Mr. Wilson just threw away.
128	20	"Dennis Goes to Washington"	Charles Barton	Phil Leslie & Keith Fowler	February 17, 1963
Dennis is appointed by the mayor to go to Washington D.C. to ask their senator to support the creation of a national forest at nearby Hickory Mountain. Mr. Wilson goes along to cover the story and thinks his contacts there will be the thing that allows the idea of a forest to be realized. None of John's contacts pan out and it is Dennis who gets things done. Bill Zuckert appears as Senator Philbin. Harry Antrim appears as Judge Harvey Kingston. Howard Wendell appears as Senator Charles McDermott.
129	21	"The Big Basketball Game"	Charles Barton	Phil Leslie & Keith Fowler	February 24, 1963
Stretch Nichols, the school basketball team's star player, quits the team after being teased about his height and worn-out clothes one time too many by Johnny Brady and some of the other players. When Mr. Quigley hears that Stretch quit, he bets Mr. Brady that the team will lose. A sympathetic Dennis persuades Mr. Quigley to help by buying Stretch new clothes and giving him an after-school job, so that Stretch will feel better about himself and rejoin the team in time for the big game. Despite sore feet from the new shoes, Stretch leads the team to a victory. And Quigley gladly pays off on his bet. Bob Hastings appears as Coach Gilmore. Note: This episode marks the final appearances in the series of Mr. Quigley, who was played by Willard Waterman, and Dennis' longtime nemesis Johnny Brady, played by Gregory Irvin. Gale Gordon and Sara Seegar do not appear in this episode, under the guise that John Wilson went from Washington D.C. to New York City to see his publisher. This also is the first episode since "The Party Line" in season 1 that does not include a Mr. or Mrs. Wilson character.
130	22	"Wilson's Allergy"	Charles Barton	Budd Grossman	March 3, 1963
Mr. Wilson is convinced that he is allergic to Dennis because he sneezes every time he is around. Henry and Alice realize that Dennis has changed his bath soap recently, so he takes a bath with his old soap to see if that is the problem. Mr. Wilson still sneezes, so he tells Dennis that they'll have to stay away from each other from now on. The only problem is, Mr. Wilson realizes he cannot write at his best without Dennis bothering him. Mr. Wilson decides he will have to move away. Dennis decides to run away so the Wilson's won't have to move. He runs into 3 hobos who bring him back. Turns out it was a hair tonic Dennis was using that made John sneeze.
131	23	"Baby Booties"	Charles Barton	Joe Bigelow & Jay Sommers	March 10, 1963
Mrs. Wilson knits several baby booties to use as golf club covers for a new set of clubs she bought for Mr. Wilson's birthday. Dennis sees the booties, and Tommy says it means that Mr. and Mrs. Wilson are going to have a baby. Dennis quickly spreads the word around the neighborhood. Word gets back to Mr. Wilson, and he thinks it may be true. Alan Hewitt appears as Dr. Johnson.
132	24	"My Four Boys"	Charles Barton	Budd Grossman	March 17, 1963
Mr. Wilson enters an essay contest that requires the entrants to be parents. He hopes to win a large sum of money. When he wins the contest, he tries to pass off Dennis and his friends as his own children. Mr. Wilson assumes the contest judge (guest star Harvey Korman) is calling at his door, but it proves to be instead an angry motorist whose car the children had damaged. When Mr. Griffin, the contest judge, finally arrives, it turns out the prize is a free pair of shoes for each of the boys. Note: This is Korman's second guest appearance in the series. He was the real-estate agent in Season 3's "Haunted House."
133	25	"Dennis and the Homing Pigeons"	Charles Barton	Phil Leslie & Keith Fowler	March 24, 1963
Dennis and Tommy play at sending messages to each other using homing pigeons. Mrs. Wilson gives Dennis a scratch pad to use for the notes without knowing that Mr. Wilson had an important stock tip written on the pad. Dennis attaches the page with the tip to a pigeon and releases it. Mr. Wilson and Henry, who also wishes to invest in the stock, try to recapture the pigeon in a haunted house. They manage to catch the elusive bird. When they get home they see a story in the evening paper about the bankruptcy of the company they wanted to invest in.
134	26	"A Tax on Cats"	Charles Barton	Phil Leslie & Keith Fowler	March 31, 1963
Mrs. Elkins' cat is bothering Mr. Wilson; he thinks cats are a nuisance. When he finds out there is an ordinance that requires cats to be licensed, he unwillingly volunteers to do the job of rounding them up. Dennis and his friends are against the idea of John catching the cats and plan to stop him whenever they can. Mr. Wilson tricks the boys into helping, by saying he's really helping them find homes. The boys bring all the cats to Mr. Wilson's house and Sgt. Mooney shows up to fine John for not having the cats licensed.
135	27	"The Uninvited Guest"	Charles Barton	Budd Grossman	April 7, 1963
While his parents are out of town, Dennis has to stay overnight at the Wilsons' house. John Wilson is not pleased about this. And the added complication of a burglar in the neighborhood is making him even more nervous. Between noises that make them think the burglar is in the house and Dennis bothering him, John goes to sleep in the Mitchell house. Dennis sees a light on at his house, so he calls the police. While Dennis, John and Sgt. Mooney are at the Mitchell house, the burglar (James Millhollin) breaks into John's house. After some more confusion, the burglar is caught. Stafford Repp appears as Lt. Wheeler.
136	28	"Dennis Plays Robin Hood"	Charles Barton	Phil Leslie & Keith Fowler	April 14, 1963
Dennis and his friends decide to play Robin Hood. Dennis takes Mr. Wilson's lawn edger to use on his own lawn. Mr. Wilson sees Mrs. Elkins using an edger she had recently purchased. Thinking it's his and that she had stolen it from him, he takes it back when she leaves to answer the phone. When other things go missing and turn up in Mr. Wilson's possession, Sgt. Mooney thinks John is a kleptomaniac.
137	29	"The Three F's"	Charles Barton	Joe Bigelow & Jay Sommers	April 21, 1963
Property taxes have risen, and Mr. Wilson thinks the reason is that the school is wasting money on nonessential programs and luxuries. So the principal invites Mr. Wilson to spend the day as a regular student. Harold Gould guest stars as Dennis' principal. Note: This is Gould's second guest appearance in the series. He played the hobo in Season 3's "Haunted House."
138	30	"Never Say Dye"	Charles Barton	Phil Leslie & Keith Fowler	April 28, 1963
A famous actress (Erin O'Brien-Moore) commissions Mr. Wilson to write her life story thinking he is a "young, vigorous author with a youthful point-of-view." He buys some hair dye in an attempt to look younger and asks Dennis to bring it to his house for him. The bottle falls out of the box and breaks on the sidewalk, so he and Tommy replace it with a bottle of Tommy's mother's dye thinking it's the same thing. An unsuspecting Mr. Wilson proceeds to use the dye on his entire head. John then talks Henry into substituting for him, but that doesn't go too well.
139	31	"The Lost Dog"	Charles Barton	Budd Grossman	May 5, 1963
Dennis finds a stray dog and, since the pound is closed until the next morning, Henry allows the dog to stay in their house for the night. The dog causes nothing but trouble including barking in the basement, jumping on Henry's bed, and chasing Mr. Wilson up a tree. Mr. Wilson reads in the paper that there is a reward for a lost dog named Clyde. He gets the dog from the Mitchell's, telling them that he will take care of it. It turns out not to be the lost dog and John is now stuck with it. The dog continues to cause John trouble, until the real owner finally shows up.
140	32	"Tuxedo Trouble"	Charles Barton	Phil Leslie & Keith Fowler	May 12, 1963
Dennis and his friends start a laundry service using Mrs. Elkins' old washing machine. Dennis offers to take Mr. Wilson's tuxedo to the cleaners but decides to try to remove a stain himself. While Dennis is away, Seymour throws the tuxedo in the washing machine with other children's dirty laundry. To cover himself, Dennis decides to give Mr. Wilson Henry's tuxedo to use. John sends the tuxedo to the tailor to have it altered. But it turns out that Henry will need his tuxedo that night. The boys have a lot of tuxedo switching to do.
141	33	"Hawaiian Love Song"	Charles Barton	Joe Bigelow & Jay Sommers	May 19, 1963
Mrs. Wilson is angry with Mr. Wilson because she thinks he's not taking her to Hawaii for their anniversary even though he promised to. He really is taking her, though, and has the plane tickets mailed to the Mitchells' so that Mrs. Wilson won't discover them. When Alice gets the envelope, she thinks that Henry has used the money from his bonus to buy them tickets to Hawaii.
142	34	"The Lucky Rabbit's Foot"	Charles Barton	Jay Sommers	May 26, 1963
Dennis has what he thinks is a lucky rabbit's foot. With recent bad luck Mr. Wilson has been having, Dennis offers to let him borrow the foot. Mr. Wilson, however, doesn't believe in such superstition and doesn't take the foot. Immediately thereafter, his bad luck continues and Dennis' gets better. Mr. Wilson then tries various methods to get Dennis to give him the rabbit's foot.
143	35	"Listen to the Mockingbird"	Charles Barton	Phil Leslie & Keith Fowler	June 2, 1963
Mr. Wilson and Mrs. Elkins are each running for president of the Birdwatchers Society. The first mockingbird of spring has made its nest in Mr. Wilson's backyard, and its chirping keeps him up at night. When Mrs. Elkins finds out that John has removed the mockingbird's nest, she believes she has the upper hand. However, thanks to Dennis, John comes up with some incriminating evidence against her. Note: This episode marks the final appearance in the series of Irene Tedrow, who played Lucy Elkins.
144	36	"First Editions"	Charles Barton	Jay Sommers	June 9, 1963
Henry tells Dennis to get rid of his massive comic book collection, so he decides to sell them. Meanwhile, Mr. Wilson wants to buy an expensive new camera, and tries to sell his first-edition books to raise the needed funds. John gets a call from a Mr. Dewey (Ronald Long) about his books. Mr. Dewey drops by to say he now cannot buy the books because he purchased the very camera John wanted. Mr. Dewey then trades the camera for John's books and Dennis' comic books. This means Mr. Wilson has to share the camera with Dennis.
145	37	"A Man Among Men"	Charles Barton	Phil Leslie & Keith Fowler	June 16, 1963
Henry has to go on a business trip, and he tells Dennis he has to be the man of the house. Meanwhile, Mr. Wilson has a book he has written published and plans to give the profits to the Red Cross. He tries to get a window display for his book at the local book store, but Alvin Jessup the owner (Grady Sutton) refuses, thinking that Mr. Wilson is a greedy man. Dennis pickets in front the book store and gets Mr. Wilson in trouble. Afterwards, Dennis talks to Mr. Jessup and convinces him to sell the books.
146	38	"Aunt Emma Visits the Wilsons"	Charles Barton	Budd Grossman	July 7, 1963
In the series finale, Mr. Wilson's Aunt Emma visits and takes an instant liking to Dennis. This causes Mr. Wilson to fear that she will make Dennis her heir instead of him. John becomes more and more worried as Aunt Emma and Dennis spend more and more time together. In the end, Aunt Emma leaves a pirate sword to Dennis and all her money to Eloise. Note: Verna Felton plays Aunt Emma. Coincidentally, she was the mother of Lee Millar, who played Tommy's father, Mr. Anderson, in Season 1's "Dennis' Tree House" and Season 3's "Dennis and the Pee Wee League."

References

1. "Dennis and the Cowboy". IMDB. Retrieved January 10, 2010.

External links

• Dennis the Menace – list of episodes at IMDb
• Dennis the Menace at TV.com