Topographic map of the Yellowstone National Park, Wyoming-Montana-Idaho / from Geological Survey atlas sheets surveyed in 1883-85 ; partial revision in 1910 by E.P. Davis ; R.B. Marshall, chief geographer.Geological Survey (U.S.)[1912]Contour interval 100 feet. Datum is mean sea level.Dissected and mounted on linen.Includes examples of "Conventional signs" used on the map in the upper right margin.Relief shown by contours and spot heights.cartographic