Lum Edwards
Chester Lauck
Abner Peabody
Norris Goff
Mr. Pinkney
Franklin Pangborn
Mrs. Madge Carmen
Kay Linaker
Omar Tennyson Gimpel
Irving Bacon
J. J. Stark Sr.
Herbert Rawlinson
Professor Albert Frisby (as Ivan Simpson)
Ivan F. Simpson
Miss LaPlanche, Dr. O'Brien's Nurse
Rosemary La Planche
Airfield Attendant
Jack Carr
Director
Malcolm St. Clair
Unit Manager
John Burch
Assistant Director
Charles Kerr
Producer
Ben Hersh
Director of Photography
Jack MacKenzie
Screenplay
Roswell Rogers
Set Dresser
Ben Berk
Editor
Duncan Mansfield
Music Director
Lud Gluskin
Michael L. Simmons
Recording Supervision
Ferrol Redd