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.

Explorations of Railroad Routes from the Mississippi to the Pacific. 14 Feb. SED 78, 33-2, v13 (pts. 1-11), 62llp. [758-768] or HED 91, 33-2, vll (pts. 1-11), 6211p. [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 ineluded in pt. 3 (Serials 760 and 793