Principal Cast
Groucho Marx
as Dr. Hugo Z. Hackenbush
Chico Marx
as Tony
Harpo Marx
as Stuffy
Allan Jones
as Gil Stewart
Maureen OSullivan
as Judy Standish
Margaret Dumont
as Emily Upjohn
Sig Ruman
as Dr. Leopold X. Steinberg
Leonard Ceeley
as Whitmore
Douglass Dumbrille
as Morgan
Esther Muir
as Flo Marlowe
Robert Middlemass
as Sheriff
Vivien Fay
as Specialty Dancer
Ivie Anderson
as Specialty Singer
Gino Corrado
as Man Boarding Bus (uncredited)
Bess Flowers
as Racetrack Spectator (uncredited)
Bert Moorhouse
as Racetrack Spectator (uncredited)
Frank OConnor
as Racetrack Guard (uncredited)
Carole Landis
as Party Guest (uncredited)
Production Crew
Directing
- Sam Wood Director
Writing
- George Seaton Screenplay
- Robert Pirosh Screenplay
- George Oppenheimer Screenplay
- George Seaton Story
- Robert Pirosh Story
Camera
- Joseph Ruttenberg Director of Photography
- Leonard Smith Director of Photography
Art
- Cedric Gibbons Art Direction
Production
- Irving Thalberg Producer
- Lawrence Weingarten Producer
- Sam Wood Producer
Sound
- Franz Waxman Original Music Composer
