Ken Snyder produced many animated segments for Sesame Street, most notably the Alice Braithwaite Goodyshoes series, as well as the occasional live-action insert (notably "B is for Bubble"). His contributions included a cartoon about a fishing boy catching letters of the alphabet (First: Episode 0004), and a cartoon about the number 20, featuring a four-armed man. (EKA: Episode 0276) Fred Calvert and Fred Crippen were the primary directors of these spots, credited in The Sesame Street Book of Letters and elsewhere to Ken Snyder Enterprises.