The Peacemakers — J.T. Edson

In 1873 Sebastian Lerdo de Tejada became President of Mexico. In the same year the Colt factory at Hartford, Connecticut, produced a new revolver. They called it the Model P and gave no thought to a better name. It became the best and most reliable fighting handgun of its age, rugged, powerful and hard hitting. Dusty Fog bought a matched brace of the new Colts … Down in Mexico there was trouble, and an old friend of the Ysabel Kid disappeared, believed murdered by the revolutionaries. That brought Dusty Fog, Mark Counter, the Ysabel Kid and Waco into Mexico. When they returned, those new Colt guns bore a name—men called them the Peacemakers....