Chapter XXIX [XIII]: The Frontier Indians
written by Josiah Gregg, 1806-1850 (1836); edited by Reuben Gold Thwaites, 1853-1913; in Early Western Travels, vol. 20: Part II of Gregg's Commerce of the Prairies, 1831-1839 (Cleveland, OH: Arthur H. Clark Co., 1904), 291-293
