Full cast and crew
Art
Ernst Fegté
production design
George Sawley
set decoration
Crew
Lee Zavitz
special effects
Sound
Leith Stevens
original music composer
Camera
Lionel Lindon
director of photography
Editing
Duke Goldstone
editor
Production
George Pal
producer
Directing
Irving Pichel
director
Writing
Actors
John Archer
Jim Barnes
Warner Anderson
Dr. Charles Cargraves
Tom Powers
General Thayer
Dick Wesson
Joe Sweeney
Erin O'Brien-Moore
Emily Cargraves
Steve Carruthers
Businessman at Meeting (uncredited)
Franklyn Farnum
Factory Worker (uncredited)
Jack Gargan
Businessman at Meeting (uncredited)
Everett Glass
Mr. La Porte (uncredited)
Kenner G. Kemp
Businessman at Meeting (uncredited)
Knox Manning
Himself (uncredited)
Mike Miller
Undetermined Secondary Role (uncredited)
Irving Pichel
Off Screen Narrator of Woody Woodpecker Cartoon (voice) (uncredited)
Cosmo Sardo
Businessman at Meeting (uncredited)
Grace Stafford
Woody Woodpecker (voice) (uncredited)
Bert Stevens
Businessman at Meeting (uncredited)
Ted Warde
Brown (uncredited)