Rimrock Trail

Three saddle-partners known across Texas and Arizona as the Three Musketeers of the Range throw in their lot with a girl from the East and her dead father's claim, and the trail leads over the rimrock to gold, a gang that means to jump the claim, and a villain called Plimsoll who ends on a rope. Dunn wrote over a thousand stories for the pulps and knew how to start a book at a gallop.