cast
- Lorne Greene
- Grandfather
- Sammy Davis, Jr.
- Heat Ratte
- Margery Gray
- Heidi
- Michael Patrick Bell
- Willie
- Peter Cullen
- Gruffle
- Fritz Feld
- Sebastian
- Pamelyn Ferdin
- Klara
- Joan Gerber
- Fraulein Rottenmeier
- Michael Winslow
- Mountain
- Janet Waldo
- Tinette
- Richard Erdman
- Herr Sessmann
- Virginia Gregg
- Aunt Dete
- Frank Walker
- Schnoddle/Hootie
crew
- Robert Taylor
- Director, Screenwriter
- Joseph Barbera
- Producer, Screenwriter
- William Hanna
- Producer
- Jameson Brewer
- Screenwriter
- Johanna Spyri
- Book Author
- Burton Lane
- Songwriter
- Hoyt Curtin
- Composer (Music Score)
- Sammy Cahn
- Featured Music
- Gregory V. Watson, Jr.
- Editor
- Paul Julian
- Art Director
- Charlie Downs
- Animator
- Hal Ambro
- Animator
