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, 1851.

Many color Sepia drawings throughout, including St. Paul, PDF pp. 35, Minnehaha Falls, PDF pp. 40. Isothermal map (equal temperatures map) of route from Atlantic to Pacific oceans, PDF pp. 538.

Johnson Annotation

Survey and Exploration of a Northern Route for a Railroad to the Pacific. 3 Mar.SED 46, 35-2, v18, 839p. [992] or HED 56, 36-1, vll (pts. 1-2), 839p. [1054-1055] Encounters with various Indian tribes of the northern Plains and Upper Missouri, Rocky Mountain region, and Northwest.