Curly
Curly Howard
Larry
Larry Fine
Moe
Moe Howard
Acme Service Station Owner (uncredited)
Bud Jamison
Professor Feinstein (uncredited)
Samuel Adams
Brainy Astronomy Student (uncredited)
Beatrice Blinn
Professor Frankfurter (uncredited)
Al Thompson
Director of Photography
Lucien Ballard
Associate Producer
Charley Chase
Director
Writer
Al Giebler
Editor
Art Seid
Hugh McCollum
Elwood Ullman