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Groucho Marx Professor Wagstaff

Harpo Marx Pinky

Chico Marx Baravelli

Zeppo Marx Frank Wagstaff

Thelma Todd Connie Bailey

David Landau Jennings

Bobby Barber Speakeasy Patron (uncredited)

Reginald Barlow Retiring Collage President (uncredited)

Vince Barnett Speakeasy Patron (uncredited)

Sheila Bromley Wagstaff's Receptionist (uncredited)

E.H. Calvert Professor in Wagstaff's Study (uncredited)

Edgar Dearing Speakeasy Bartender (uncredited)

Robert Greig Biology Professor (uncredited)

Theresa Harris Laura (uncredited)

Edward LeSaint Professor in Wagstaff's Study (uncredited)

Florine McKinney Peggy Carrington (uncredited)