List of Harold Walker Studios cartoons with MPAA numbers

This is a list of MPPDA certificates for Harold Walker cartoons. Starting in 1934, The Motion Picture Producers and Distributors of America--also known as the Hay's Office--issued "approval certificates" for every and any film submitted. Early films--including Warner cartoons--tended to have a large disclaimer play shortly before the opening titles. Until 1935, when Harold Walker cartoons simply put the MPPDA certificate number in the technical credits rather than making a separate slide.

1937:

 * Don't You Forget About Cow: Certificate №.
 * Holiday In Ice: Certificate №.

1939:

 * Mixing In Mexico: Certificate №.
 * Artist Unknown: Certificate №.
 * The Lion Hunt: Certificate №.
 * Don't Wake A Sleepy Dog: Certificate №.
 * Lucky Corny: Certificate №.
 * Marooned On Cannibal Island: Certificate №.
 * Treasure Jerk: Certificate №.
 * Breakfast For Two: Certificate №.
 * The Eager Gophers: Certificate №.

1940:

 * Gopher's Beauty Shoppe: Certificate №. 54113
 * Mouse Menace: Certificate №.
 * The Two Knights: Certificate №.
 * Half Baked Corny: Certificate №.
 * Pastry Pirate: Certificate №.
 * Busy Buddies: Certificate №.
 * Cow That Being Milked His Milk: Certificate №. 5052
 * Rover's Rival: Certificate №.
 * Out-Foxed: Certificate №.
 * Africa Combat: Certificate №.

1941:

 * Looney Park: Certificate №.
 * Corny In The Zoo: Certificate №.
 * Fishing Follies: Certificate №.
 * The Country Cousin: Certificate №.
 * The Orphan Egg: Certificate №.
 * Big Cheese Burglar: Certificate №.
 * The Wheel Thing: Certificate №.
 * Corny's Fire Department: Certificate №.
 * The Police Gopher: Certificate №.

1942:

 * Circus Cow: Certificate №.
 * Man's Best Friend: Certificate №.
 * Little Beau Corny: Certificate №.
 * Toll-Bridge Problem: Certificate №. 19601
 * Fox and Grapes: Certificate №.
 * The Duck Collapses: Certificate №. 19601
 * Food for the Patient: Certificate №.
 * Boa Trouble: Certificate №.

1943:

 * Take Heed Blitz Tank: Certificate №.
 * Yankee Doodle Corny: Certificate №.
 * The Foxy Hunting is not Work: Certificate №.
 * Professor Mutt and Mr Flip: Certificate №.
 * Attack with Flowers: Certificate №.
 * Where is my Popcorn?: Certificate №.
 * Egg for Me: Certificate №.
 * The Fly Last Flight: Certificate №.
 * Room and Bored: Certificate №.
 * Ardman's Counter Attack: Certificate №.

1944:

 * The Bengal Tiger Hunt: Certificate №.
 * Tree Trouble: Certificate №.
 * Richie Duck: Certificate №.
 * Corny's Auto: Certificate №.
 * Minefield Folly: Certificate №.
 * Corny and the Telephone: Certificate №.
 * Superduck: Certificate №.
 * Morning Stretch: Certificate №.
 * Life a Beach: Certificate №.

1945:

 * Bear's House: Certificate №.
 * The Fail Research: Certificate №.
 * Corny's Clock: Certificate №.
 * The Donkey Business: Certificate №.
 * Duck Munchausen: Certificate №.

1946:

 * Lion Sandwich: Certificate №.
 * Hunger Strikes: Certificate №.
 * Please To Eat You: Certificate №.
 * Uncivil War: Certificate №.
 * Coach Corny: Certificate №.
 * Magican Duck: Certificate №.
 * Tennis Menace: Certificate №.
 * The Grapes is Mine! No is Mine!: Certificate №.
 * Mr. Hen's Holiday: Certificate №.

1947:

 * Ducky Fishing: Certificate №.
 * Peg-Leg Bull: Certificate №.
 * Slide Corny Slide: Certificate №.
 * The Mad Doctor: Certificate №.
 * Farmyard Melodies: Certificate №.

1948:

 * Corny's Hare Hunt: Certificate №.
 * Jerky Crow: Certificate №.
 * Out to Punch: Certificate №.
 * A-Lad in the Bagdad: Certificate №.

1949:

 * Corny's Glider: Certificate №.
 * Darbie's Birthday: Certificate №.
 * Menace In The Castle: Certificate №.

1959:

 * Duckazoic Era: Certificate №. 31318
 * Find Your Own Duck: Certificate №.
 * Touchdown Corny: Certificate №.
 * Ducky N' Putt: Certificate №. 6553
 * Sissy Sheriff: Certificate №. 7223
 * The Spy Wore Corny: Certificate №.
 * Sheep Stealers: Certificate №. 8448
 * Oddballs In The Outdoors: Certificate №.
 * Gold, Silver, Bronze and Corny: Certificate №.
 * Millionaire Cats: Certificate №. 33123
 * Restaurant For Ducky: Certificate №. 33123

1960:

 * Matter in the Hatter: Certificate №. 4223
 * Hocus Pocus Ducky: Certificate №. 22299
 * Sleepy Time Corny: Certificate №. 1922
 * Ducky Pool Fool: Certificate №.
 * Hearts and Flow-Ears: Certificate №. 89985

1965:

 * Knights Must Fall: Certificate №.

1966:

 * Animal Cross Country Race: Certificate №.