| Person | Type | Job | Role(s) |
|---|---|---|---|
 Ben Grauman Kohn | Crew | Writing | Writer |
Cherry Wilson | Crew | Writing | Writer |
Clifford Smith | Crew | Directing | Assistant Director |
George H. Plympton | Crew | Writing | Writer |
Gilbert Kurland | Crew | Sound | Sound |
Heinz Roemheld | Crew | Sound | Music |
Henry MacRae | Crew | Production | Producer |
John Hickson | Crew | Camera | Director of Photography |
 Lew Landers | Crew | Directing | Director |
Murray Seldeen | Crew | Editing | Editor |
Ralph Berger | Crew | Art | Art Direction |
Richard Fryer | Crew | Camera | Director of Photography |
William A. Sickner | Crew | Camera | Director of Photography |
Art Dillard | Cast | Actor | Cowhand (uncredited) |
Bert Dillard | Cast | Actor | Cowhand (uncredited) |
 Bud Osborne | Cast | Actor | Cowhand (uncredited) |
 Cactus Mack | Cast | Actor | Arizona Wranglers Band Member Cactus (uncredited) |
 Chester Gan | Cast | Actor | Chinaman (uncredited) |
 Cliff Lyons | Cast | Actor | Cowhand (uncredited) |
 Edmund Cobb | Cast | Actor | Brakeman (uncredited) |
 Fred Kohler | Cast | Actor | Deem Dorn |
 Glenn Strange | Cast | Actor | Arizona Wranglers Band Member 'Peewee' Strange (uncredited) |
 Harry Woods | Cast | Actor | Mack - Red Wing's Owner (uncredited) |
 J. Farrell MacDonald | Cast | Actor | Trinidad Dorn |
 James P. Burtis | Cast | Actor | Greasy |
 Jean Rogers | Cast | Actress | Kerry Dorn |
 Jimmy Phillips | Cast | Actor | Cowhand (uncredited) |
 Monte Montague | Cast | Actor | Cowhand (uncredited) |
 Noah Beery Jr. | Cast | Actor | Stormy |
Buck Bucko | Cast | Actor | Cowhand (uncredited) |
 Raymond Hatton | Cast | Actor | Stuffy |
 Robert Homans | Cast | Actor | Train Conductor (uncredited) |
Roy Bucko | Cast | Actor | Cowhand (uncredited) |
 Sam McDaniel | Cast | Actor | Mack's Hostler (uncredited) |
W.H. Davis | Cast | Mr. Dearman (uncredited) | |
 Walter Miller | Cast | Actor | Craig |
 Wilfred Lucas | Cast | Actor | Mack's Horse Trainer (uncredited) |
 Rex | Cast | Rex (as Rex King of Wild Horses) | |
Rex Junior | Cast | Rex as a Colt (as Rex Jr.) | |
| Person | Type | Job | Role(s) |
