Preliminary geological map of the Yellowstone National Park / 
Hayden, Ferdinand Vandeveer.
Gannett, Henry.
Holmes, W. H.
Wilson, A. D.
Julius Bien & Co.
[Washington] :  Department of the Interior, 
1878.
In: Maps and Panoramas. Twefth Annual Report of the Geological and Geographical Survey of the Territories. Sh. 6.