Reprinted, with introduction, from U.S. 31st Cong., 1st sess. Senate. Ex. doc. no 47.
Official edition published with title: Report of the secretary of war, communicating information in relation of the geology and topography of California.
Microfilm. New Haven, Conn. : Research Publications, 1975. 1 microfilm reel ; 35 mm. (Western Americana: Frontier History of the Trans-Mississippi West, 1850-1900, Reel 548, No. 5479)