Peter K. Hirsch

Peter K. Hirsch is the head writer on. He was a staff writer for the first four seasons of Arthur and took over as head writer after Joe Fallon and Ken Scarborough left the production crew. He is perhaps the program's most prolific writer, having written 105 episodes in total thus far, as well as writing episodes for every season of the program as of season 20. He also wrote lyrics for some songs in the special Arthur's Perfect Christmas. Some of his other writing credits include Martha Speaks and Time Warp Trio.

Confirmed

 * Mayor Hirsch is named after him.
 * He appears in person as one of the two people who tell Arthur, Buster, and Bo that their car has been towed in the episode "".
 * Dr. Hirsch is also named after him.

Speculated

 * The name 'Peter' appears on a paper on the bulletin board behind Arthur in "Arthur's Big Hit" right after Binky walks into Ratburn's classroom.

Arthur

 * 107b. Buster Makes the Grade (episode)
 * 113a. So Long, Spanky
 * 116a. Arthur and the Crunch Cereal Contest (episode)
 * 116b. D.W. Flips (episode)
 * 202b. Arthur's Lucky Pencil
 * 203b. Buster and the Daredevils
 * 204a. Arthur Makes a Movie
 * 205a. Arthur's Underwear (episode)
 * 207a. Arthur's TV-Free Week
 * 212b. Arthur and the Square Dance
 * 213a. Water and the Brain
 * 214a. Sue Ellen's Lost Diary
 * 220b. Sue Ellen's Little Sister
 * 302a. D.W. All Fired Up
 * 304a. Background Blues
 * 307a. Arthur Rides the Bandwagon
 * 309b. The Return of the King
 * 311a. Double Tibble Trouble
 * 313a. Arthur's Dummy Disaster
 * 401a. D.W.'s Library Card (episode)
 * 403a. Buster's Breathless
 * 408a. 1001 Dads
 * 409a. What is that Thing?
 * 501b. Arthur and the Big Riddle
 * 502a. Kids are from Earth, Parents are from Pluto
 * 505a. The Lousy Week
 * 505b. You Are Arthur
 * 508b. Bitzi's Beau
 * 509a. Just Desserts
 * 510a. Arthur's Family Feud
 * 601a. Sue Ellen Gets Her Goose Cooked
 * 601b. Best of the Nest
 * 603b. The Secret Life of Dogs and Babies
 * 605a. The Boy Who Cried Comet
 * 607a. The Boy with His Head in the Clouds
 * 608a. Rhyme for Your Life
 * 701b. The Great Sock Mystery
 * 704a. To Tibble the Truth (with Gerard Lewis)
 * 705. Elwood City Turns 100! (with Matthew Lane)
 * 709a. Prunella Sees the Light
 * 710. April 9th
 * 801a. Dear Adil
 * 801b. Bitzi's Break-Up
 * 805b. Sue Ellen Chickens Out (with Peter Egan)
 * 806. Postcards from Buster (episode)
 * 810a. Big Horns George
 * 901a. Castles in the Sky
 * 902a. George Blows His Top (with Courtney Lilly)
 * 904a. Buster's Green Thumb
 * 905a. Lights, Camera... Opera!
 * 906b. It Came From Beyond
 * 901b. Breezy Listening Blues
 * 1001. Happy Anniversary
 * 1009a. Do You Speak George?
 * 1101a. Swept Away
 * 1104a. Phony Fern
 * 1105a. Baby Kate and the Imaginary Mystery
 * 1106a. The Making of Arthur
 * 1107b. Mr. Alwaysright
 * 1109b. Spoiled Rotten
 * 1202a. Room to Ride
 * 1202b. The Frensky Family Fiasco
 * 1208b. Mei Lin Takes a Stand
 * 1209a. Home Sweet Home
 * 1301. The Great MacGrady
 * 1303a. Arthur's Number Nightmare
 * 1306a. When Carl Met George
 * 1307a. A Portrait of the Artist as a Young Tibble
 * 1309b. The Pride of Lakewood
 * 1404a. Falafelosophy
 * 1404b. The Great Lint Rush
 * 1406a. Follow the Bouncing Ball
 * 1406b. Buster Baxter & the Letter from the Sea
 * 1409a. D.W., Queen of the Comeback
 * 1410b. The Long Road Home
 * 1503a. Buster's Secret Admirer
 * 1506a. Prunella the Packrat
 * 1601. Based on a True Story
 * 1605b. Read and Flumberghast
 * 1606a. The Last Tough Customer
 * 1606b. Brain's Chess Mess
 * 1610a. So Funny I Forgot to Laugh
 * 1701a. Show Off
 * 1701b. Dog's Best Friend
 * 1705b. Kidonia
 * 1707a. Pets and Pests
 * 1707b. Go Fly a Kite
 * 1708a. The Director's Cut
 * 1708b. Crime and Consequences
 * 1710b. Brain Freeze
 * 1801b. D.W. & Bud's Higher Purpose
 * 1802a. The Friend Who Wasn't There
 * 1804a. Best Wishes
 * 1805b. Arthur Calls It
 * 1806a. Whip. Mix. Blend.
 * 1901a. Brain's Brain
 * 1902a. Sue Ellen Adds It Up
 * 1905a. Buster Isn't Buying It
 * 1907a. Carl's Concerto
 * 1907b. Too Much of a Good Thing
 * 1909b. Besties
 * 1910. The Last Day
 * 2001b. Arthur and the Whole Truth
 * 2005a. Lend Me Your Ear
 * 2005b. The Butler Did It

Postcards from Buster

 * Buster's Egyptian Adventure

Songwriting Credits

 * "Perfect Christmas" (lyrics)
 * "What's the Use of Presents?" (lyrics)