Washington DC: Government Printing Office, 1876. First edition. Hardcover. Capt. Simpson's report on the search for a new route from Salt Lake City to the Pacific coast for a shorter western supply route for the Army, which later became known as the Central Overland Route. Illustrated with numerous lithographic plates of fishes, fossils and plants.
Folio, 518pp, errata slip. All maps and illustrations as called for in table of contents. Dark green gilt cloth, covers marked, rear board detached, spine flapping; tide marks at gutter and lower edges of pages, through p7. Good condition. Item #25439