This lot features three eye-catching maps from Hayden's Twelfth Annual Report of the United States Geological and Geographical Survey of the Territories: A. Part of Central Wyoming, (33.4 x 22.9"). A very detailed map that displays the full course of the Sweetwater River, South Pass, etc. and depicts trails throughout the region. Wheat draws attention to the map's value to students of the Fur Trade and overland immigration routes. Remarkable detail is shown with contour intervals at 200 feet and a scale of 4 miles = 1 inch. The map extends from part of the Wind River Reservation south to Rawlins. Old wagon roads, trails and the Union Pacific Railroad are featured. A color and pattern code at the bottom provides the key to the 32 different geologic types. Condition: There are a few repaired fold separations and a few splits at fold intersections. (B+)

B. Parts of Western Wyoming and Southeastern Idaho, (32.8 x 22.8"). This colorful map is centered on today's Jackson Hole, Wyoming and extends to show good detail of Jenny and Leigh lakes, but the area of Yellowstone National Park is completely blank. Names John Gray's Lake, the Blackfoot River, Caribou Mt., Fremont's Pk., To-gwo-tee-a Pass, and much more. It provides a detailed examination of the Snake River and Blackfoot Range in Idaho and the Gros Ventre Mountains and part of the Wind River Range in Wyoming. Condition: Numerous long fold separations have been closed on verso with archival materials. There is toning along the folds with a bit of loss at the fold junctions. (B)

C. Parts of Western Wyoming, Southeastern Idaho and Northeastern Utah, (33.4 x 22.9"). Very detailed sheet shows all land from the Green River Basin in the east to the Bear River Range to the west. Maps the Aspen Range, Salt River Range, and the Wyoming Range in the north, and extends south below Bear Lake to Logan. Locates numerous settlements and includes Fremont’s Lake. Condition: Numerous long fold separations have been closed on verso with old tape and tape stains are visible on recto. There is toning along the folds with a bit of loss at the fold junctions. (B)

References: Wheat (TMW) #1296.

Condition:

All three maps were issued folding and feature nice bright color. See description above for more detailed condition assessments for the individual maps.