PNP249864 The \'Invaders\' of the Johnson County War of Wyoming, 1892 (b/w photo) by American Photographer, (19th century); Private Collection; (add.info.: War on Powder River; Wyoming Civil War; monopoly of larger cattle ranchers falsely accused smaller ranchers of rustling; many smaller ranchers lynched; Wyoming Stock Growers Association; hired hitmen called Regulators led by Frank Wolcott (1840-1910);); Peter Newark American Pictures; American, out of copyright.