| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alexander Golitzen | Crew | Art | Art Direction |
Alfred Sweeney | Crew | Art | Art Direction |
 Bud Westmore | Crew | Costume & Make-Up | Makeup Artist |
 Chuck Roberson | Crew | Crew | Stunts |
 Dalton Trumbo | Crew | Writing | Screenplay |
Edward Lewis | Crew | Production | Producer |
Edward Mann | Crew | Editing | Supervising Editor |
 Ernest Gold | Crew | Sound | Original Music Composer |
Ernest Laszlo | Crew | Camera | Director of Photography |
Eugene Frenke | Crew | Production | Producer |
 George Robotham | Crew | Crew | Stunt Double |
Howard Rigsby | Crew | Writing | Novel |
Joseph Gershenson | Crew | Sound | Conductor |
 Kirk Douglas | Crew | Production | Executive Producer |
Larry Germain | Crew | Costume & Make-Up | Hairstylist |
 Michael Luciano | Crew | Editing | Editor |
Nate D. Slott | Crew | Directing | Assistant Director |
Norma Koch | Crew | Costume & Make-Up | Costume Design |
Oliver Emert | Crew | Art | Set Decoration |
 Robert Aldrich | Crew | Directing | Director |
Tom Connors Jr. | Crew | Directing | Assistant Director |
Waldon O. Watson | Crew | Sound | Sound |
May Boss | Crew | Crew | Stunt Double |
Donald Cunliffe | Crew | Sound | Sound |
 Adam Williams | Cast | Actor | Calverton |
 Carol Lynley | Cast | Actress | Melissa 'Missy' Breckenridge |
 Dorothy Malone | Cast | Actress | Belle Breckenridge |
Gregorio Acosta | Cast | Singing ranch hand (uncredited) | |
 Jack Elam | Cast | Actor | Ed Hobbs |
 James Westmoreland | Cast | Actor | Julesburg Kid (as Rad Fulton) |
John Shay | Cast | Actor | Bowman |
Jorge Treviño | Cast | Actor | Mexican trader (uncredited) |
 Joseph Cotten | Cast | Actor | John Breckenridge |
 José Chávez | Cast | Actor | Man at Cock Fight (uncredited) |
 José Torvay | Cast | Actor | Rosario (uncredited) |
Kirk Douglas | Cast | Actor | Brendan 'Bren' O'Malley |
Manuel Alvarado | Cast | Actor | Bartender saloon (uncredited) |
Manuel Vergara 'Manver' | Cast | Man at Cock Fight (uncredited) | |
Margarito Luna | Cast | Actor | Jose (uncredited) |
 Neville Brand | Cast | Actor | Frank Hobbs |
 Peter Helm | Cast | Actor | Man in saloon (uncredited) |
Regino Herrera | Cast | Man in saloon (uncredited) | |
 Regis Toomey | Cast | Actor | Milton Wing |
 Rock Hudson | Cast | Actor | Dana Stribling |
Rubén Márquez | Cast | Man in saloon (uncredited) | |
Vicente Lara | Cast | Man in saloon (uncredited) | |
Isabel Vázquez | Cast | Actress | Old woman in trading store (uncredited) |
Ángela Rodríguez | Cast | Woman shouts out in saloon (uncredited) | |
Arturo Fernández | Cast | Man in saloon (uncredited) | |
Amelia Rivera | Cast | Woman in saloon (uncredited) | |
| Person | Type | Job | Role(s) |
