Yep, the title pretty much sums it up. People in Montana, or at least those who create dioramas for the regional and county museums of this vast state certainly love mannequins. Perhaps not as much as the people of this film, but enough to use them ubiquitously throughout and to mixed success.
This first picture postcard is actually an old tableau no longer extant in the town of Virginia City. VC, as those in the know (I really don't know who that is) call it, is kind of a historic tourist trap of sorts. Once abandoned, then restored, once filled with mannequins recreating olden day life in the west, now filled with souvenir shops…only a few of the vivid dioramas remain. Most have weathered and crumbled.
I believe the cobble is one of the few visible dioramas left visible in the town. Here, the cracks in the figure's skull are very visible showing signs of age and disrepair.
These other mannequins are from other various museums throughout the state. While the one below is more likely a custom job the rest are probably cast offs from defunct catalog and department stores long closed from the main streets of Montana.