Directed by
| Hawley Pratt | ||
Writing Credits
| Dr. Seuss | ... | (teleplay) |
Cast (in credits order)
| Eddie Albert | ... | Narrator (voice) | |
| Bob Holt | ... | The Lorax / The Once-ler (voice) | |
 |
Athena Lorde | ... | Miss O'Schmunsler (voice) |
|
|
Harlen Carraher | ... | Boy (voice) |
| Rest of cast listed alphabetically: | |||
| Irene Tedrow | ... | Thneed Customer (voice) | |
| Scatman Crothers | ... | Singer (voice) (uncredited) | |
|
|
Thurl Ravenscroft | ... | Singer (voice) (uncredited) |
| Vivian Vance | ... | Singer (voice) (uncredited) | |
Produced by
| David H. DePatie | ... | executive producer |
| Friz Freleng | ... | producer |
| Dr. Seuss | ... | producer (as Ted Geisel) |
Music by
| Dean Elliott | ||
Editing by
| Lee Gunther | ||
| Joe Siracusa | ||
| Rick Steward | ||
Production Design by
| Maurice Noble | ||
| David H. DePatie | ... | (uncredited) |
Production Management
| Harry Love | ... | production supervisor |
| Stan Paperny | ... | executive in charge of production |
Art Department
| Irv Spector | ... | storyboard artist |
| David H. DePatie | ... | storyboard artist (uncredited) |
Sound Department
| Steve Orr | ... | production mixer |
Camera and Electrical Department
| John Burton Jr. | ... | camera operator |
| Larry Hogan | ... | camera operator |
| Ray Lee | ... | camera operator |
Animation Department
| Warren Batchelder | ... | animator |
| John Gibbs | ... | animator |
| Manny Gould | ... | animator |
| Bob Matz | ... | animator |
| Bob Richardson | ... | animator |
| Robert Taylor | ... | animator |
| Richard H. Thomas | ... | background artist |
| Richard Thompson | ... | animator (as Dick Thompson) |
| Don Williams | ... | animator |
| Michael Adams | ... | animator (uncredited) |
| Bob Richardson | ... | additional animator (uncredited) |
| Dr. Seuss | ... | animator (uncredited) |
| Richard H. Thomas | ... | background designer (uncredited) |
Music Department
| Dr. Seuss | ... | lyricist |
| Thurl Ravenscroft | ... | featured vocalist (uncredited) |
