| Person | Type | Job | Role(s) |
|---|---|---|---|
 George S. Kaufman | Crew | Writing | Theatre Play |
 George Wells | Crew | Writing | Writer |
Harry Leon Wilson | Crew | Writing | Novel |
 Irene | Crew | Costume & Make-Up | Costume Design |
Lou Breslow | Crew | Writing | Writer |
 Marc Connelly | Crew | Writing | Theatre Play |
Robert Alton | Crew | Directing | Director |
 Alan Mowbray | Cast | Actor | Frank Mulvaney |
 Almira Sessions | Cast | Actress | Mammoth Studio's Nurse (uncredited) |
Celia Travers | Cast | Actress | Secretary (uncredited) |
 Charles D. Brown | Cast | Actor | Jeff Baird |
 Chester Conklin | Cast | Actor | Keystone Kop (uncredited) |
 Constance Purdy | Cast | Actress | Landlady (uncredited) |
 Dick Wessel | Cast | Actor | Chick |
 Douglas Fowley | Cast | Actor | Phil |
 Frank Marlowe | Cast | Actor | Ernie - Prop Man (uncredited) |
 Franklyn Farnum | Cast | Actor | Man Raising Theatre Curtain (uncredited) |
 George Magrill | Cast | Actor | Gateman - Mammoth Studios (uncredited) |
 Gloria Grahame | Cast | Actress | Beulah Baxter |
 Gordon Richards | Cast | Actor | Kristen - Beulah's Butler (uncredited) |
 Hal K. Dawson | Cast | Actor | Gus Blanchard - Agent (uncredited) |
 Harry Hayden | Cast | Actor | Mr. Gashwiler |
 Hugo Haas | Cast | Actor | Von Strutt - Director |
 Jim Davis | Cast | Actor | Von Strutt's Assistant (uncredited) |
 King Baggot | Cast | Actor | Man in Audience (uncredited) |
 Leon Ames | Cast | Actor | Lawrence Rupert |
 Mary Treen | Cast | Actress | Gladys (uncredited) |
 Mitchell Lewis | Cast | Actor | Set Guard (uncredited) |
 Morris Ankrum | Cast | Actor | Goodfellow's Club Manager (uncredited) |
 Oliver Blake | Cast | Actor | Mr. Purdie (uncredited) |
 Red Skelton | Cast | Actor | Merton Gill aka Clifford Armytage |
 Robert Emmett O'Connor | Cast | Actor | Mac - Restaurant Counterman (uncredited) |
 Tim Ryan | Cast | Actor | Mammoth Studio's Night guard (uncredited) |
 Tom Trout | Cast | Actor | Marty |
 Virginia O'Brien | Cast | Actress | Phyllis Montague |
 William Benedict | Cast | Actor | Von Strutt's Assistant (uncredited) |
| Person | Type | Job | Role(s) |
