Preliminary geological map of the Yellowstone National Park / Department of the Interior, U.S. Geological and Geographical Survey of the Territories ; F.V. Hayden, U.S. geologist in charge ; W.H. Holmes, geological assistant ; primary triangulation by A.DGeological and Geographical Survey of the Territories (U.S.)[1878]"Surveyed in 1878."Includes notes.Relief shown by contours and spot heights. Depths shown by soundings.To accompany the Survey's 12th annual report (1878).cartographic