Pacific Railway Survey. 4 vol.

PACIFIC RAILWAY SURVEY (4). 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 Direction 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 IV-VII. Washington, 1856-57. See text!