| Person | Type | Job | Role(s) |
|---|---|---|---|
 Bernard Vorhaus | Crew | Directing | Director |
 F. Hugh Herbert | Crew | Writing | Screenplay |
 John Alton | Crew | Camera | Director of Photography |
John Victor Mackay | Crew | Art | Art Direction |
Joseph Moncure March | Crew | Writing | Screenplay |
Kenneth Holmes | Crew | Directing | Assistant Director |
Samuel Ornitz | Crew | Writing | Screenplay |
 Sol C. Siegel | Crew | Production | Producer |
 Victor Young | Crew | Sound | Original Music Composer |
William Morgan | Crew | Editing | Editor |
 Yakima Canutt | Crew | Crew | Stunt Coordinator |
Arthur Millett | Cast | Actor | Farmer |
 Bill Nestell | Cast | Actor | Farmer |
Bill Wolfe | Cast | Farmer Driving to Oregon | |
 Bob Burns | Cast | Actor | Farmer |
 Byron Foulger | Cast | Actor | Joe Stebbins |
 Charles Coburn | Cast | Actor | Dr. Karl Braun |
 Charles Waldron | Cast | Actor | Dr. William Thorpe |
 Darwood Kaye | Cast | Boy Patient Sitting in Chair | |
 Dewey Robinson | Cast | Actor | Bartender |
Douglas Evans | Cast | Actor | 'We the People' Radio MC |
 Francis Ford | Cast | Actor | Farmer Bill, with Higgins |
 Frank Brownlee | Cast | Actor | Bill--Farmer |
 Frederick Vogeding | Cast | Actor | Herr Schmidt, Eric's Assistant |
 Helen MacKellar | Cast | Actress | Mrs. Welles |
 Horace B. Carpenter | Cast | Actor | White-Haired Farmer in Oregon |
 Jack Montgomery | Cast | Joe--Farmer | |
 Jim Corey | Cast | Actor | Churchgoer |
 John Sheehan | Cast | Actor | Man Asking When Wedding Will Be |
 John Wayne | Cast | Actor | John Phillips |
 Manuel París | Cast | Actor | Refugee Doctor |
 Mary Field | Cast | Actress | Mrs. Stebbins |
 Roland Varno | Cast | Actor | Dr. Eric Von Scherer |
Rose Plumer | Cast | Actress | White Haired Farmer's Wife |
 Russell Simpson | Cast | Actor | Minister |
 Si Jenks | Cast | Actor | Train Conductor |
 Sigrid Gurie | Cast | Actress | Leni 'Lenchen' Braun |
 Spencer Charters | Cast | Actor | Dr. 'Nunk' Atterbury |
 Stuart Holmes | Cast | Actor | Extra Farmer at Meeting |
 Ted Stanhope | Cast | Actor | Farmer |
 Trevor Bardette | Cast | Actor | Clem Higgins |
 Victor Potel | Cast | Actor | Postman |
 Wade Boteler | Cast | Actor | Mr. Harris, Department of Agriculture Official |
 Wendell Niles | Cast | Actor | Man-on-the-Street Radio Announcer |
 Wolfgang Zilzer | Cast | Actor | Dr. Rudolf Preussner |
 Sonny Bupp | Cast | Actor | Billy Welles |
Hugh Chapman | Cast | Actor | Boy |
Gretchen Kisker | Cast | Girl | |
Calvin Ellison | Cast | Boy | |
Lola Milliorn | Cast | Girl | |
 Hank Patterson | Cast | Actor | Pool Player |
| Person | Type | Job | Role(s) |
