National map of the territory of the United States from the Mississippi River to the Pacific Ocean: made by the authority of the Hon. O.H. Browning, secretary of the interior, in the office of the Indian Bureau chiefly for government purposes under the direction of the Hon. N.G. Taylor commsr. of Indian affairs & Hon. Chas. E. Mix, chief clerk of the Indian Bureau : compiled from authorized explorations of Pacific rail road routes, public surveys, and other reliable data from the departments of the government at Washington, D.C