Pride of the Mountain Man — William W. Johnstone

THE TASTE OF BLOOD...AND FEAR
It's a simple job for Smoke Jensen: drive a herd of longhorns to the backwater railhead of Dodge City. When he arrives there, Smoke finds a town in the grip of terror, its only lawman, Wyatt Earp, outgunned by a cutthroat gang forty strong. The rampage of bank robberies, looting, and cold-blooded murder stirs Smoke's instinct for survival, and his desire for justice. But to take the law's side means braving the West's most notorious outlaw...

His name is "Bloody Bill" Anderson, a Confederate guerilla whose violent career as a gunhawk has earned the fearless desperado a deadly reputation. Now he's found his match in the Mountain Man -- and choking on the muzzle of Smoke's twin Colts is only the beginning of an all-out war that'll turn one lawless town into a legend...