The hunting of Lope Gamboa

"Texas Rangers Frank Carson and Eddie Brand have been unsuccessfully hunting outlaw Lope Gamboa for some time, but their luck seems to change when they ride into Yuma. A consignment of US gold is to be transported along the Oxbow Route by Conestoga wagon and the Rangers are convinced that Gamboa will attempt to steal the precious metal. As all factions close in on the lumbering Conestoga wagon, the trail leads inexorably to the Gila desert ... and a bloody climax"--Page 4 of cover.