Richardson, G.B., and George Otis Smith

GEOLOGIC ATLAS OF THE UNITED STATES; CASTLE ROCK FOLIO, COLORADO; FOLIO 198

Washington, DC: United States Geological Survey [USGS], 1915. First edition. Large folio. Very Good. Item #32656

Printed wrappers. Thirteen pages with "Description of the Castle Rock Quadrangel," with three pages of maps showing, besides geologic features, roads, railroads and towns, one page with Columnar Section, and two pages of photographs. Light soiling to the rear cover. Small tear to the photo page, not affecting the photographs. A very good copy.

Price: $40.00