... the Thin Hills, above the Big Lone Tree upon the Powder River, the Uncpapa Sioux had celebrated their Sun Dance, some forty years ago. It was midsummer and the red folk were happy. They lacked for nothing. The yellowish green flat on either side of the Powder was studded with wild flowers, and the cottonwood trees ... — Old Indian Days • [AKA Ohiyesa], Charles A. Eastman