GEOLOGIC ATLAS OF THE UNITED STATES; NEPESTA FOLIO, COLORADO; FOLIO 135
Washington, DC: United States Geological Survey [USGS], 1906. First edition. Large folio. Printed wrappers. Five pages with "Description of the Nepesta Quadrangel," with three pages of maps showing, besides geologic features, roads, railroads and towns, and one page with Columnar Section. First page toned. A very good copy. More