(CO. - Western) Western Colorado And Part Of Utah

(CO. - Western) Western Colorado And Part Of Utah, Hayden, 1877
     The work of F.V. Hayden and his men is foundational to the mapping of Colorado. While the Hayden survey worked through vast swathes of the West, including Wyoming, Utah, Montana and other areas, their study and mapping of Colorado is unparalleled and gave a new and in-depth grasp of the mountainous state. Working with his band of men, scientists and engineers, from 1873 to 1876, they mapped the state's topography and geology revealing a wealth about it's mostly mountainous 104,100 square miles. The culmination of their years of work was summed in the Geological And Geographical Atlas Of Colorado And Portions Of Adjacent Territory that was published in 1877 and in 1881. Described by one historian as a “business man's geologist”, Hayden's focus in the region's geology showed that it was the mineral resource of the West, and it was Hayden that discovered the coal and iron ore in the territory, including it on his maps. Rich with detail for roads, drainage, railroads, as well as the topography, the maps from Hayden's Atlas are the best for the time.

Here the masterful treatment of the central western mountains and the vast Ute Reservation as it was at the time. Catches just the northern reaches of the "San Juan Purchases", and does cross over into neighboring Utah for a bit. 
      Condition is good with some mild dampstaining at bottom , and into the lower centerfold.