Ralph Compton. Ride the hammer down

"Marshal John Beck was the law in the dangerous town of Mother Lode, Arizona. He's managed to keep bandits, rustlers, and desperados at bay. It was a tough job for one man to handle, but he made it work...until the day Bram Hogan and his Brickhouse Gang got the drop on the lawman. They beat Beck to within an inch of his life and dropped him in the desert where a slow, painful death awaited him. But the gang underestimated Beck. Even at his lowest...