Separately published map of Northwestern Wyoming, which appears to be 4 sheets from the United States Geological Survey.
The map focuses on the topographical features of the region, with rivers, mountains, ranches, lakes and mining regions noted, along with several early road in the south.
The hand written title on the verso is:
Parts of Shoshone & Yellowstone National Forests East and Adjacent to Yellowstone Park
The map extends from the area around the Old Geysers on the Wind River and Dubois, Wyoming to the Montana-Wyoming border, centered on the Shoshone National Forest.
Approximately the northern two-thirds of the map is with the Eastern part of Yellowstone National Park.