Chester Lauck

Lum Edwards

Norris Goff

Abner Peabody

Franklin Pangborn

Mr. Pinkney

Kay Linaker

Mrs. Madge Carmen

Irving Bacon

Omar Tennyson Gimpel

Herbert Rawlinson

J. J. Stark Sr.

Ivan F. Simpson

Professor Albert Frisby (as Ivan Simpson)

Rosemary La Planche

Miss LaPlanche, Dr. O'Brien's Nurse

Jack Carr

Airfield Attendant