In the final scene, there is a movie marquee with the words: "Now Showing/Nobody Loves a Drunken Indian". That was the title of the novel on which the movie was based.
Richard Harris was originally cast as Flap but was replaced shortly after filming began by Anthony Quinn because of "creative differences".
Claude Akins plays a character named Lobo. Several years later, Akins played another (unrelated) character named Lobo in the TV series "B.J. and the Bear" and "The Misadventures of Sheriff Lobo".