Very detailed with topography shown via hachure. Centered roughly on Bear Lake, the map extends from City of the Rocks and American Falls in the West to Fort Aspen and Gilbert's Trading Post at the east. Salt Lake City is located at the extreme bottom. Locates numerous place names, mountain passes, etc. Names forts: Hall, Piney, Thompson and Aspen.
References: Wheat (TMW) #1004.
Condition: C
Toned, with splits along one fold due to brittle paper. Will benefit from conservation and tissue backing.