US railway survey 1853-55

US RAILWAY SURVEY 1853-55. STEVENS, ISAAC I. et al. Reports of Explorations and Surveys to Ascertain the most Practicable and Economical Route for a Railroad from the Mississippi River to the Pacific Ocean. Made under the Directioin of the Secretary of War, in 1853-5, According to Acts of Congress of March 3, 1853, May 31, 1854, and August 5, 1854. Volume XII. Book I. See text!