I'm a big fan of the HBO series Deadwood. One naturally wonders how accurately the show reproduces life in Deadwood in the late nineteenth century. The show is framed as the adventures of a violent outpost of civilization: "The spring of 1877 brings major changes to the teeming outlaw camp of Deadwood, as civilization makes its way to town. New arrivals will usher in an era of power struggles with the camp founders-and power struggles in Deadwood have a way of turning violent..."
Compare that description with a news article from The Farmers' Cabinet, 6/26/1877, Vol. 75, Iss. 51, p. 1. Though it's no documentary, Deadwood certainly conforms to the spirit, if not the letter, of this article.