Bob Newhart
Bernard (voice)
Bob Newhart
Bernard (voice)
Eva Gabor
Miss Bianca (voice)
Geraldine Page
Madame Medusa (voice)
Joe Flynn
Mr. Snoops (voice)
Jeanette Nolan
Ellie Mae (voice)
Pat Buttram
Luke (voice)
Jim Jordan
Orville (voice)
John McIntire
Rufus (voice)
Michelle Stacy
Penny (voice)
Bernard Fox
The Chairman (voice)
Larry Clemmons
Gramps (voice)
James MacDonald
Evinrude / Brutus / Nero (voice)
George Lindsey
Rabbit (voice)
Bill McMillian
TV Announcer (voice)
Dub Taylor
Digger (voice)
John Fiedler
Owl (voice)
Robie Lester
Miss Bianca (singing voice, uncredited)
Peter Renaday
American Deligate (voice) (uncredited)
Art Stevens
Director
Larry Clemmons
Author
Wolfgang Reitherman
Director
John Lounsbery
Director
Ken Anderson
Author
Margery Sharp
Novel
Frank Thomas
Author
Vance Gerry
Author
James Melton
Editor
Ron Miller
Executive Producer
Wolfgang Reitherman
Producer
Artie Butler
Original Music Composer
Dick Sebast
Author
David Michener
Author
Burny Mattinson
Author
James Koford
Editor
Fred Lucky
Author
Ted Berman
Author
Herb Taylor
Sound Supervisor
Milt Kahl
Animation
Ollie Johnston
Animation
Frank Thomas
Animation
Carol Connors
Songs
Ayn Robbins
Songs
Sammy Fain
Songs
Don Bluth
Animation Director
Sylvia Roemer
Layout
Daniela Bielecka
Background Designer