This map details Stansbury's important exploration of the Great Salt Lake Basin that permanently established much topography and many of the place names of northwestern Utah. It extends from the 42nd parallel and includes the Wasatch Mountains, Cache Valley and Ogden's Hole, and south to include Lake Utah and the Youab Valley. Indian, as well as Mormon, names are given for the creeks. A wonderful notation in The Desert west of the lake provides important information for travelers, "This desert consists of clay and sand impregnated with salt. When wet, it has the consistency of mortar. Lightly loaded wagons can pass between Spring Valley and Pilot Peak in the driest part of the season. Forage and water must be carried for cattle, and the journey begun in the P. M. and continued through the night. Distance between springs 70 ms." Lithographed by Ackerman.

References: Wagner-Camp #219:1; Wheat (TMW) #765.

Condition: A

An exceptionally clean and bright example with one short edge tear at left that has been closed on verso with archival material.