© William Penhallow Henderson, Sky High, Powder River, Riding Cheyenne, Las Vegas Rodeo, 1915-1925, oil on canvas, 40.87 x 54.75″

© William Penhallow Henderson, Sky High, Powder River, Riding Cheyenne, Las Vegas Rodeo, 1915-1925, oil on canvas, 40.87 x 54.75″