Gunsight Pass (Musaicum Western Mysteries). William MacLeod Raine

Gunsight Pass, or How Oil Came to the Cattle Country and Brought a New West is the tale of Dave Sanders, a young and brave cowboy from Arizona who tries to save a victim of a robbery and gets wrongly accused of a murder. After serving his sentence Dave returns to the cattle country finding that the oil boom has brought all kinds of crooks and troublemakers to the Old West. Determined to shake off his past and clear his reputation Dave stands up against outlaws to protect himself, his friends, and off course, the woman he loves.