Detailed separately-issued map of Yellowstone showing the layout of the nation's first national park at the beginning of the twentieth century. The map is finely detailed, showing all of the park plus the region to the east up to Bighorn County, in today's Park County.
The map has good topographical detail with contour intervals at 100 feet at a scale of 1 inch to 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.
Circles show ranger stations and snowshoe cabins and completed and projected roads are shown as well. Saddle trails are also indicated.
An earlier edition of the map did not include snowshoe cabins.