| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alford Van Ronkel | Crew | Writing | Screenplay |
Duke Goldstone | Crew | Editing | Editor |
Ernst Fegté | Crew | Art | Production Design |
 George Pal | Crew | Production | Producer |
George Sawley | Crew | Art | Set Decoration |
 Irving Pichel | Crew | Directing | Director |
James O'Hanlon | Crew | Writing | Screenplay |
Lee Zavitz | Crew | Crew | Special Effects |
Leith Stevens | Crew | Sound | Original Music Composer |
Lionel Lindon | Crew | Camera | Director of Photography |
 Robert A. Heinlein | Crew | Writing | Novel, Screenplay |
 Bert Stevens | Cast | Actor | Businessman at Meeting (uncredited) |
 Cosmo Sardo | Cast | Actor | Businessman at Meeting (uncredited) |
 Dick Wesson | Cast | Actor | Joe Sweeney |
 Erin O'Brien-Moore | Cast | Actress | Emily Cargraves |
 Everett Glass | Cast | Actor | Mr. La Porte (uncredited) |
 Franklyn Farnum | Cast | Actor | Factory Worker (uncredited) |
 Grace Stafford | Cast | Actress | Woody Woodpecker (voice) (uncredited) |
Irving Pichel | Cast | Actor | Off Screen Narrator of Woody Woodpecker Cartoon (voice) (uncredited) |
 Jack Gargan | Cast | Actor | Businessman at Meeting (uncredited) |
 John Archer | Cast | Actor | Jim Barnes |
 Kenner G. Kemp | Cast | Actor | Businessman at Meeting (uncredited) |
 Knox Manning | Cast | Actor | Himself (uncredited) |
Mike Miller | Cast | Actor | Undetermined Secondary Role (uncredited) |
 Steve Carruthers | Cast | Actor | Businessman at Meeting (uncredited) |
 Tom Powers | Cast | Actor | General Thayer |
 Warner Anderson | Cast | Actor | Dr. Charles Cargraves |
Ted Warde | Cast | Brown (uncredited) | |
| Person | Type | Job | Role(s) |
