Detailed separate map of Yellowstone National Par at the beginning of the 20th Century.
This finely detailed topographical map shows all of Yellowstone Park plus the region to the east up to Bighorn County, in today's Park County. It has good topographical detail with contour intervals at 100 feet at a scale of 1 inch = 4 miles.
The Upper, Shoshone, Gibbon, and Heart Lake Geyser Basins are named, along with the Mud Geysers, Mammoth Hot Springs, and Old Faithful Hotel.
There was another edition published with Snowshoe Cabins and Stations shown.