From the Pimas villages to Fort Fillmore : from explorations and surveys
At head of title: Route near the 32nd parallel of north latitude. Map no. 2. Relief shown by hachures. From U.S. War Department, Explorations and Surveys for a Railroad Route from the Mississippi River to the Pacific Ocean. Topographical Maps ... to Illustrate the Various Reports ... (Washington, 1859) "The Gila River, from the mouth of the valle del Sauz eastword, is laid down from the reconnaissance of Maj. W. H. Emory, U.S.T.E. in 1846--the remaining portion of the Gila; the positions of Frontera, El Paso, Ft. Fillmore and Tucson, and the topography along the Mexican Boundary Line were furnished by the office of the Mexican Boundary Commission, Maj. W. E. Emory, Commissioner. The heavy dotted line indicates new trails were made by Lt. Parke's Parties." Description derived from published bibliography. Scale 1:760,320. LC Railroad maps, 159 Available also through the Library of Congress Web site as a raster image.