Montana can trace its brewing roots back more than 150 years to when a barrel of beer was brewed in Virginia City and carried to the town saloon. Since then, Montana has seen breweries large and small erupt along cattle trails and at train stations and riverside trading posts. Some of the brewers and breweries set in Montana were the foundations of future, national-brand breweries, having unique ties to Olympia Brewing and Pabst Brewing Company. And...