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.
In addition to guiding sounds for animated shorts as complexly nuanced as Mickey's Trailer (1938), he created numerous original inventions and devices to produce expressive sounds for characters such as 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 outwits Donald Duck in his 1950s short films.