This movie was the first role for James Stacy following his 1973 motorcycle accident in which he was hit by a drunk driver, resulting in the loss of his left arm and left leg. Kirk Douglas created the role especially for Stacy.
Filmed in Tucson. Arizona area, at Tucson Studios and in Sabino Canyon, north of Tucson.
Pepe says to Strawhorn "What'd you expect...Joaquin Murrieta?" This is a reference to Joaquin Carrillo Murrieta, an infamous bandit during the 1850s California Gold Rush.