This decorative map shows transitional, territorial borders. It features the newly-formed huge territory of Idaho, here occupying present-day Montana and Wyoming. Eastern Washington is shown with only two named counties, Oregon has 19 of its 36 counties, and its eastern portion is noted only as unexplored. The map notes areas important to navigation, such as Ft. Boisee, Ft. Bonneville, the Three Buttes and several gold mining areas including Elk City, and much more. The Emigrant Route, or the Oregon Trail, winds across from South Pass, following the route of the Snake River and ending at Walla Walla. Surrounded with an attractive, stone lithographed floral border. A very early depiction of Idaho Territory.

References: Blevins Mapping Wyoming #162.

Condition: A+

Pleasant, even age toning.