Bob Baker
— Captain Bob Bradley
Cecilia Callejo
— Lorita Hernandez
Don Barclay
— Sergeant Andy Sharpe
LeRoy Mason
— Jack Sommers
Nina Campana
— Lupe
Martín Garralaga
— Don Ricardo Hernandez
Forrest Taylor
— John F. Ferguson
Carlyle Moore Jr.
— Bill Cody
Julian Rivero
— Don Francisco Diego
Jack Kirk
— Henchman Phelps
Carleton Young
— Henchman Ramon
Ernie Adams
— Express Rider
Chuck Baldra
— Henchman
Buzz Barton
— Brady
Horace B. Carpenter
— Land Commissioner
Ed Cassidy
— Army Captain
Joe Dominguez
— Pedro
John Eberts
— Hernandez's Servant
Ray Jones
— Henchman
Chief Many Treaties
— Chief Red Cloud
Wilbur McCauley
— Henchman
Tex Palmer
— Jackson, Express Rider
Tex Phelps
— Jeff, Relay-Station Man
Jimmy Phillips
— Relay-Station Man
Bud Pope
— Bud, Henchman
Arthur Van Slyke
— Postmaster General Joseph Holt