Lobo Gray [WorldCat Entities]

"The Lower-Pecos cattle country was run by a crooked judge. He enforced his own brand of law with trigger-happy killers, headed by Lobo Gray. The judge's ramrod had no friends ... and no enemies. Nobody who drew on Gray lived to regret it; they died too fast."@en
"A crooked judge sends the leader of his band of trigger-happy killers, Lobo Gray, into the hills to kidnap and honest rancher. But unknown to Gray, another killer is sent to follow him to make sure he doesn't return."@en
"A crooked judge in the Lower-Pecos cattle country enforced his own brand of law with trigger-happy killers, headed by Lobo Gray. The judge began to fear his henceman, and when a local rancher hired his own gunmen the judge sent Lobo Gray to kidnap him and ordered another of his killers to make sure Lobo didn't come back alive...."
"The Lower-Pecos cattle country was run by a crooked judge. He enforced his own brand of law with trigger-happy killers, headed by Logo Gray. The judge's ramrod had no friends... and no enemies. Nobody who drew on Gray lived to regret it; they died too fast. Even Judge Blake grew to fear his henchman. That's why he sent Gray into the Pecos high country to kidnap Russell Wallace, an honest rancher who had hired his own gunmen to fight off the killers. That's why he ordered a treacherous, cunning Yucatano to follow Gray. His Honor didn't want the Lobo back alive..."