Max Brand 
Bull Hunter [PDF ebook] 

In the old West, laws were often loosely and arbitrarily applied, so many gunslingers and cowboys took the law into their own hands and applied eye-for-an-eye justice on their own terms. The huge, lumbering outlaw Bull Hunter intends to hunt down and kill the men responsible for his uncle’s death. When he finds out that the ringleader is already behind bars, he devises a clever plot to spring his nemesis in order to dispense his comeuppance, street justice-style.