Cast
Ross Bagdasarian, Jr.
Alvin / Simon / David Seville (voice)
Janice Karman
Theodore / Tommy's Sister (voice)
Frank Welker
Santa Claus / Doctor (voice)
Charles Berendt
Clyde Crashcup (voice)
R.J. Williams
Tommy Waterford (voice)
June Foray
Mrs. Waterford / Mrs. Claus
Crew
Directing
Phil Monroe
Director
Editing
Rich Harrison
Editor
Production
Janice Karman
Producer
Ross Bagdasarian, Jr.
Producer
Mary Roscoe
Associate Producer
Mary Roscoe
Production Manager
Sound
Chris Caswell
Music
Visual Effects
Chuck Jones
Character Designer
Phil Monroe
Animation
Stan Walsh
Animation
Irv Anderson
Animation
Leslie Margolin
Animation
Terry Lennon
Animation
John McGuire
Animation
Alan Zaslove
Animation
Norm McCabe
Animation
Ken O'Brien
Animation
Virgil Ross
Animation
Sam Nicholson
Animation
Dave Brain
Animation
Tom Ray
Animation
George Scribner
Animation