The Lawbringers 3: The Big Snow

Three disasters hit the mountain town of Aztec at the same time:
A blizzard had completely blocked the passes and cut the town off from all help.
Curt Warren, the prospector the town had been grubstaking, was found bushwhacked while returning with big news.
And a notorious outlaw and killer had been trapped in town by the big snow.
It all added up to the biggest crisis of his career to Sheriff Morgan, especially since the outlaw – and suspected bushwhacker – was Morgan’s own no-good brother!