Eleventh Annual Report of United States Geological and Geographical Survey of the Territories embracing Idaho and Wyoming, being a report of progress of the exploration for the year 1877
Conducted under the authority of the Secretary of the Interior. List of annual reports, with contents of each, and author and subject index may be found in "Catalogue and index of the publications of the Hayden, King, Powell, and Wheeler surveys" by L.F. Schmeckebier. 1904. (U.S. Geological Survey. Bulletin no. 222).