The Thunder Riders by Frank Leslie
Yakima Henry left his ranch cabin in the White Mountains for supplies, and rode right into a bloody shootout between the Saber Creek townsfolk and a gang of predatory banditos who just hit a stagecoach to the tune of $50,000 in cash. But what really riles Yakima is the banditos making off with his prized stallion, Wolf, and a pretty saloon girl named Anjanette.
Now, caught between the banditos who think he’s chasing them and the townsfolk who think he’s one of the banditos, he’s going to recover Wolf, the cash, the girl, and his own good name. But what Yakima doesn’t know is that Anjanette isn’t as innocent as she seems. To make it out alive, Yakima must face a gang of cutthroats who unleash a rain of blood wherever they strike—the Thunder Riders.