Trailer
Images
 | Kent Rogers as Horton / Peter Lorre Fish (voice) (uncredited) |
 | Sara Berner as Maysie / Baby (voice) (uncredited) |
 | Mel Blanc as Mouse / Hunters / Audience Member (voice) (uncredited) |
 | Frank Graham as Narrator (voice) (uncredited) |
 | Robert Clampett as Various (voice) (uncredited) |
| Writing | |
| Dr. Seuss | Novel |
Sound | |
| Carl W. Stalling | Music |
Directing | |
| Robert Clampett | Director |
Production | |
| Leon Schlesinger | Producer |
