| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfred Newman | Crew | Sound | Original Music Composer, Music Director |
 Arthur Hornblow Jr. | Crew | Production | Executive Producer |
Herbert Sutch | Crew | Directing | Assistant Director |
Hugh Bennett | Crew | Editing | Editor |
Jack Noyes | Crew | Sound | Sound |
 John Ford | Crew | Directing | Director |
Ray Heindorf | Crew | Sound | Orchestrator |
Ray June | Crew | Camera | Director of Photography |
Richard Day | Crew | Art | Set Decoration, Settings |
Robert McIntyre | Crew | Production | Casting |
 Samuel Goldwyn | Crew | Crew | Presenter, Producer |
Sidney Howard | Crew | Writing | Screenplay |
 Sinclair Lewis | Crew | Writing | Novel |
 A.E. Anson | Cast | Actor | Professor Max Gottlieb |
 Adele Watson | Cast | Actress | Mrs. Novak (uncredited) |
 Alec B. Francis | Cast | Actor | Twyford |
 Bert Roach | Cast | Actor | Bert Tozer |
 Beulah Bondi | Cast | Actress | Mrs. Tozer (uncredited) |
 Bobby Watson | Cast | Actor | Little Neighbor (uncredited) |
 Carl M. Leviness | Cast | Actor | Ship's Passenger (uncredited) |
 Charlotte Henry | Cast | Actress | Pioneer Girl (uncredited) |
 Clarence Brooks | Cast | Actor | Dr. Oliver Marchand |
 Claude King | Cast | Actor | Dr. Tubbs |
 Cyril Delevanti | Cast | Actor | Committee Member (uncredited) |
 David Landau | Cast | Actor | State Veterinarian |
 DeWitt Jennings | Cast | Actor | B.W. Tozer (uncredited) |
 Edmund Mortimer | Cast | Actor | Ship's Passenger (uncredited) |
 Eric Mayne | Cast | Actor | Dignitary at Luncheon (uncredited) |
Eric Wilton | Cast | Actor | Ship's Officer (uncredited) |
 Erville Alderson | Cast | Actor | Pioneer (uncredited) |
 Florence Britton | Cast | Actress | Miss Twyford (uncredited) |
 George Humbert | Cast | Actor | Italian Uncle (uncredited) |
 Gibson Gowland | Cast | Actor | Committee Member (uncredited) |
Harry Schultz | Cast | Actor | Bartender (uncredited) |
 Helen Hayes | Cast | Actress | Leora Tozer Arrowsmith |
 James A. Marcus | Cast | Actor | Old Doctor (uncredited) |
 John Qualen | Cast | Actor | Henry Novak (uncredited) |
 Kendall McComas | Cast | Actor | Little Johnny (uncredited) |
 Lillian Lawrence | Cast | Actress | West Indies Townswoman at Meeting (uncredited) |
 Lumsden Hare | Cast | Actor | Sir Robert Fairland |
Milton Royce | Cast | Intern (uncredited) | |
 Myrna Loy | Cast | Actress | Joyce Lanyon |
 Nora Cecil | Cast | Actress | Nurse (uncredited) |
 Pat Somerset | Cast | Actor | Ship's Officer (uncredited) |
 Raymond Hatton | Cast | Actor | Drunk (uncredited) |
 Richard Bennett | Cast | Actor | Gustav Sondelius |
 Ronald Colman | Cast | Actor | Dr. Martin Arrowsmith |
 Russell Hopton | Cast | Actor | Terry Wickett |
Sherry Hall | Cast | Actor | Reporter (uncredited) |
 Sidney De Gray | Cast | Actor | Dr. Hesselink (uncredited) |
 Theresa Harris | Cast | Actress | Native Mother (uncredited) |
Walter Downing | Cast | City Clerk (uncredited) | |
 Ward Bond | Cast | Actor | Cop (uncredited) |
 Mike Lally | Cast | Actor | Reporter (uncredited) |
Edward Reinach | Cast | Dignitary (uncredited) | |
| Person | Type | Job | Role(s) |
