Following the departure of the producers of Paramount Pictures
B picture unit
Pine-Thomas Productions, their publicity director A. C. Lyles, who had been employed by Paramount since the age of 14 was employed by the studio to produce second feature films. During this time Paramount arranged to loan Lyles to CBS where he was involved with the production of the
Rawhide series in order to learn about Westerns. A 1963 Paramount production meeting noticed there were no Westerns set to be made by the studio despite the incredible popularity of American westerns in overseas markets. Lyles offered to make a low budget Western in a rapid amount of time, buying a script from his friend screenwriter
Steve Fisher. The film was initially set to star
Rory Calhoun, but Calhoun came down with pneumonia the night before the production was set to start filming.
Dale Robertson, star of the television series,
Tales of Wells Fargo, stepped in at six hours' notice. Lyles had acquired the friendship and respect of a galaxy of experienced actors who offered their services to his production. ==Release and Reception==