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 1853-6, according to Acts of Congress of March 3, 1853, May 31, 1854, and August 5, 1854

Some color plates of route, black and white drawings of shells and plants. Stratigraphic maps of San Francisco Bay and Port of San Pedro to Los Angeles, PDF pp. 336, and Rio Grande to Pimas Villages, PDF pp. 337; Mt. Ranier, PDF pp. 425.

Johnson Annotation

Explorations of Railroad Routes from the Mississippi to the Pacific. [791-801] Journals of expeditions, including descriptions of Indians; a northern route from Minnesota, along the Upper Missouri, to Washington; a central route from Missouri, across the Great Basin, to California; a southern route from the Red River, along the Rio Grande and Colorado Rivers, to southern California; a report on Indian tribes of the Southwest is included in pt. 3 (Serials 760 and 793).