Each photograph accompanied by guard sheet with descriptive letter-press. "Department of the Interior. United States Geological Survey of the Territories, F.V. Hayden, United States Geologist-in-charge." Master microform held by: ResP.
Microfilm. Woodbridge, Conn. : Research Publications, 1981. on 1 microfilm reel ; 35 mm. (History of photography. Monographs ; reel 186, no. 2032).