John James "Jimmy" MacDonald (May 19, 1906 - February 1, 1991) was a Scottish voice actor and the original head of the Disney sound effects department, and the voice of Mickey Mouse from 1947 to 1977. In addition to directing sounds for animated shorts as aurally complicated as Mickey's Trailer (1938), he developed many original inventions and contraptions to achieve expressive sounds for characters like Casey Jr., the circus train engine from Dumbo (1941); Evinrude the dragonfly from The Rescuers (1977); the bees in Winnie the Pooh and the Honey Tree (1966); and Buzz-buzz (later called "Spike"), the bee who gets the best of Donald Duck in his 1950s short films.