The earliest obtainable map of Yellowstone National Park.
The map locates the known hot spring and Geyer Basins in Red and Hotel Sites with Green Stars, along with a key locating 12 places on the map. HIghly detaile,d including both known locations (mountains, lakes, rivers, etc.) and an area labeled "Unexplored Area". Several proposed roads are showns, along with the Continental Divide. An essential map for Western collectors.