This film marks the first use of Spain by American film companies as a substitute for the old west. This trend would reach its peak in the 60s and 70s with Sergio Leone and subsequent imitators.
The basic premise of a fish-out-of-water in the old west who, despite untamed and violent forces still manages to prevail, had been made popular ten years earlier with Bob Hope in The Paleface (1948) and Son of Paleface (1952).
Jayne Mansfield was relegated by critics as a wannabe Marilyn Monroe. Here, she would instead be inspired by Mae West.