S.W. Colorado and Parts of New Mexico, Arizoana and Utah.
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 indepth grasp of the mountainous state. Working with his band of men, scientists and engineers, from 1873 to1876, 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 “businessesman'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.
This map for Four Corners area of spans from Sierra Abajo in Utah to Navajo Mesa in Arizona and up to just above San Juan City in Colorado. Shows a wealth for native ruins, noting "Ruins", "Cliff House", as well as "Burial Place". Also shows the "Old Spanish Trail".
Condition is good with some marginal dampstaining. Image size is approximately 24 x 36 (inches)