Once Upon a Mouse is a 1981 American theatrical featurette directed by Jerry Kramer and Gary Rocklen of Kramer/Rocklen Studios, produced in association with Walt Disney Productions.

[1] In celebration of our twentieth animated feature, we invite you to relive with us the story telling magic, the wit, the wisdom, the humor, the understanding of a very special person who gave the world a timeless and universal art form.

This is the legacy of Walt Disney...A documentary featurette produced in celebration of the studio's 20th (soon to be 24th) feature-length animated film The Fox and the Hound which highlights sixty years of Walt Disney's legacy beginning with Steamboat Willie in 1928 followed by a kaleidoscopic magic carpet ride through the world of Disney animation, including segments from hundreds of films shown through the use of montages, collages, computerized optical effects, behind-the-scenes footage, and special tributes to Disney and Mickey Mouse.

[2] The featured clips include Mickey Mouse shorts, The Jungle Book, Bambi, Fantasia, The Rescuers, Song of the South, One Hundred and One Dalmatians, Snow White and the Seven Dwarfs, The Adventures of Ichabod and Mr. Toad, Alice in Wonderland, Lady and the Tramp, Pinocchio, Dumbo, Peter Pan, Sleeping Beauty, The Aristocats, The Sword in the Stone and Robin Hood.

This compilation also features The Flying Mouse (1934), Three Blind Mouseketeers (1936), Brave Little Tailor (1938) and Ben and Me (1953).