D - Mr. Dorfman, mailman

E - Eloise Wilson

F - The Fishing Trip

G = Great Scott!

H = Henry Mitchell

I - Irritating Dennis

J = Jay North

K - Krinkie the newspaper editor

L = Lucy Elkins

M - Mr. Wilson's Sister

N = Uncle Ned

O - Dennis and the Open House

P = P.O. Mooney

Q - Quit the baseball team, Dennis was forced to by new principal Spivey

R = Jeannie Russell

S = Soapbox Derby

K - Keep off the Grass - Henry gets a ticket from a over-zealous new cop, for walking on the grass in the park. Wilson goads him into fighting it in court.

L - Lucky Piece

M - Martha

N = Neighbors, the Wilsons

O - Obnoxious Johnny Brady

P = Policeman Mooney

Q - Quarter that Dennis sometimes got for doing some chore

R = Riled up is how Mr. Wilson often got around Dennis

S = Sylvia Field

T - Tedrow, Irene

U = Uncle Ned

V - Valentines Dennis sold in July

W = Wilsons

X -on Wilson's treasure map for Dennis

Y = Yelling, very often by Mr. Wilson

Z - Zaremba, John - bit player in "Miss Cathcart's Friend"

A = Alice Mitchell

B = Boys, Dennis and Tommy

C - Cathcart, Esther

D = Dennis!

E - Dennis and the Good Example

F = Friend Tommy

G - Keep off the Grass

H = Hovering around Mr. Wilson, which Dennis does a lot

I - Innocents in Space

J = Jeepers

K Krinkie, newspaper editor

L = Lucy Elkins

M - Maryvale at the garden center

N = Jay North

O - Dennis and the Open House

P = P.O. Mooney

Q - Quota of tickets for Sgt. Mooney

R = Robert John Pitman

S - Sam the frog

T = Tommy

U - useless items, junk, collected and garaged by Dennis and Tomy

V = Vaughn Taylor who guested on the show

W = Wilson family

X - on Wilson's treasure map

Y = Yelling, very often by Mr. Wilson, who seems to get irritated easily.

Z -Zambezi, real name of a dog Dennis found for Miss Cathcart

A = Alice Mitchell

B = Boswell the sheepdog

C = Esther Cathcart

D - Digging gopher in Wilson's yard, courtesy of another Dennis blunder

E = Edna

F - The Fishing Trip

G = Great Scott!

H - Hannibal Coons, writer

I = Irrepressible and sometimes impish Dennis

J - Jury of kids who tried Mr. Wilson for burning his incinerator at the wrong time

K = Hank Ketcham

L - Lucy Elkins

M = Margaret

N - Naughty Dennis

O = Otis Quigley

P - Pittman, Robert John

Q = Quintessential grouch Mr. Wilson

R - Robert John Pittman, I said!

S = Seymour

T - Tibbles, George - a writer

Uncle Ned

V - Valentines Dennis sold in July

Wilsons

X - X on treasure map Dennis makes, that Wilson thinks is real

Y = Young boys

Z - Zambezi, a dog Dennis tried to give to Miss Cathcart

A = Agnes Spinks

B - Dennis Sells Bottles

C = Esther Cathcart

D = Dennis

E = Lucy Elkins

F - Fell a tree in the park, the commissioner wanted to, but George was in it

G = George Wilson

H - Harold Mooney (among a few first names he was called)

I = Iced tea served by Mrs. Wilson

J - Just the facts, ma'am - quote from Dennis when he was playing detective

K - Dennis and the Duck

L = Loves his garden, Mr. Wilson

M = Margaret

N - Never Say Dye

O = Otis Quigley

P - Dennis' Paper Drive

Q = Quintessential mischievous little boy = Dennis

R - Ronny Howard

S = Sylvia Field

T = Trained Fremont, Dennis did successfully

U - Uncontrollable Dennis

V = Very polite lady, Mrs. Wilson

W = Wilsons

X - on Dennis's wrong test answers

Y = Yelling by George!

Z - Zaremba, John - plays a dog owner Miss Cathcart thinks is single

A = Alice Mitchell

B - Billy Booth

C = Charles Brady

D - Dorfman the mailman

E = Episode 20 - Dennis and the Dog

F - The Fortune Cookie

G - Great Scott!

H - Henry

I - Irritating Dennis

J - Jeannie Russell

K - Krinkie the newspaper editor

L - The Party Line

M = Martha

N = Ned

O - Out of Retirement

P = P.O. Mooney

Q - Quota of tickets for Sgt. Mooney??

R = Rodents that Dennis had for a school project

S - Stewart, a friend for Dennis in season 1

T = Tiny white mice Dennis had

U - Un-disciplined Dennis

V = Very sweet lady to all, Martha Wilson

W = Mary Wickes

X - on the treasure map that leads Wilson to dig up a water line

Y = Yelling - mostly by Mr. Wilson

Z=John Zaremba, who played Zambezi's owner, Arthur Prylich.
This one was pretty tough.

A - Alice

B = Boys Dennis and Tommy

C - catch, Dennis and Tommy played it sometimes

D = Dorothy Holland

E - Esther Cathcart

F = Fremont

G - George

H = Herbert Anderson

I = Irritating Dennis

J - Joey, Dennis's BFF in the comics, but is only in a few season 1 episodes

K = Joseph Kearns

L - Louella MacFarlane, a writer

M = Margaret

N - new principal Mr. Spivey

O = Otis Quigley

P - Police Sgt. Mooney

Q = Mr. Quigly

R = Rascal that Dennis can sometimes be

S = Sara Seegar

T - Ten, Dennis was around that age in the final season

U - Uncle Ned

V - very annoying at times, Seymour

W - Wilsons

X = Xmas ep where Dennis is jonesing for a pony

Y = Yelling done by Mr. Wilson

Z - Zambezi, the real name of the dog Dennis gave Miss Cathcart

A - Alice Mitchell

B - Back pocket, for Dennis's slingshot

C - Esther Cathcart

D - Dorfman the mailman

E - Eloise Wilson

F - Fonda, James

G - Great Scott!

H - Harrington, last name Margaret gave Mr. Spivey in class (had been Wade)

I = Ingenuity = When Dennis really wants something, this comes up in spades!

J - John Wilson

K = Hank Ketcham

L - The Party Line

M = Margaret

N - Dennis's Newspaper

O = Opie Swanson

P = P.O. Mooney

Q - Quart of milk, Dennis must have spilled one--the camera just wasn't going!

R = Ron Howard

S = Seymour

T = Tommy

U = Uncomplicated mind of young Dennis

V - Valentines Dennis was selling in July

W = Wonderful mother of Dennis, Alice Mitchell

X on Wilson's treasure map

Y - Young Dennis with the baggy pants

Z = Zzzzzzzzzzzzz sounds from Mr. Wilson when he's napping

A - Adams, Stanley - plays Mr. Richmond, who buys Dennis's Confederate bill.

B = Billy Booth

C - Cats the boys stop John Wilson from catching

D = Dennis!

E = Ms. Elkins

F = Fremont

G = George Wilson

H - haul into court, as Mrs. Elkins did to John Wilson, for burning trash

I = Irritable = Mr. Wilson rather often

J - Jon Walmsley played a shy kid with long hair around season 11

K = Kind to animals: Dennis

L = Lucy Elkins

M - Margaret Wade/Harrington

N = Jay North

O - Dennis and the Open House

P - Parley Baer was on a couple of episodes.

Q = Otis Quigley

R = Rare coin collector: Mr. Wilson

S - Stewart

T = Tommy

U - unrelenting when he wants something, Dennis

V = Very kind woman, Mrs. Wilson

W - Wilsons

Xmas eps where Dennis manipulates to get a pony

Y - Yard (Mr. Wilson's) that Dennis lets a gopher loose in

Z - Zambezi

A = Alice Mitchell

B - Billy Booth

C = Esther Cathcart

D = Dennis

E = Easy-going = Henry Mitchell, IMO

F - Fight, when Dennis had to deal with a bully

G = Gloria Henry

H - Harold Mooney

I = Irrepressible = that’s our Dennis!

J - John Wilson

K - Krinkie

L - Little chair in the corner, Dennis's frequent 'home'

M = Menace

N = Jay North

O - Opie Swanson

P = Pest = Dennis, at times, to Mr. Wilson

Q - Quintessential little boy = Dennis

R - Robert John Pittmsn

S - Sylvia Field

T - Tent that Dennis and Tommy camped out in

U = Uncontrollable Dennis

V = Victorious dog, Charlie, whose painting won first prize

W = Wilsons

X - lot of them, of Dennis's tests

Y = Yelling by an often upset Mr. Wilson

Z - John Zaremba, guest actor

A = Alice Mitchell

B - Busts by Sgt. Mooney

C = Crabby = Mr. Wilson, at times

D = Dennis

E = Esther Cathcart

F = The Fishing Trip

G = George Wilson

H = Henry Mitchell

I = Irritating Dennis

J - Jerk Mr. Brady