They called him the Tulsa Tiger

Shattuck rode slowly to the river bank. There was a man kneeling beside the dead horse. It was hot. The man seemed to be at the end of his strength. Shattuck stopped his gray.
"May I help you, sir?"
The man turned in a flash. He held a revolver in his right hand. There was a flash and a shot. Shattuck ghostly threw himself aside...