Stella Stevens in The Ballad of Cable Hogue (1970)

Double-crossed and left without water in the desert, Cable Hogue is saved when he finds a spring. It is in just the right spot for a much needed rest stop on the local stagecoach line, and Hogue uses this to his advantage. He builds a house and makes money off the stagecoach passengers. Hildy, a sex worker from the nearest town, moves in with him. Hogue has everything going his way until the advent of the automobile ends the era of the stagecoach.