Fine separately issued large format map of Idaho and western Wyoming, prepared by the Hayden Survey in 1872.
Wheat describes the map as:
On a scale of 5 miles to the inch, and with topography rendered by brushwork, this is evidently the original from which was made the engraved version . . . published in Hayden's Sixth Annual Report. The map was lithographed, and we are at a loss to explain why a reduced version replaced it in the Report. In a very attractive way, it shows the country from Fort Hall to the Grand Canyon of the Yellowstone, and as far east as the upper Yellowstone River.
The extraordinary detail shows the route of the Surveyor's Party as shown in the Western part of the map. The Continental Divide is located, and a number of annotations are shown. The map locates the various Geyser Basins in the region.
The Stage Road to Virginia City is shown in the west, as is the Stage Road from Corinne to Virginia City.
While the reduced size version (11 x 10 inches) appears on the market occasionally, this enlarged version is quite rare, this being the second example we have offered for sale in over 20 years.