Preliminary report of the United States Geological Survey of Wyoming and portions of contiguous territories, (being a 2. annual report of progress). Conducted under authority of the Secretary of the Interior

Final report of the United States Geological Survey of Nebraska and portions of the direction of the Commissioner of the General Land Office

Hayden, F. V., (1871)

Preliminary report of the United States Geological Survey of Montana and portions of adjacent territories : being a fifth annual report of progress

Hayden, Ferdinand V., (1872)