The Heritage of the Desert by Zane Grey

Classic western. According to Wikipedia: Zane Grey (1872 – 1939) was an American author best known for his popular adventure novels and stories that presented an idealized image of the rugged Old West. As of June 2007, the Internet Movie Database credits Grey with 110 films, one TV episode, and a series, Dick Powells Zane Grey Theater based loosely on his novels and short stories.