Washington, DC: United States Geological Survey [USGS], 1925. First edition. Large folio. Item #47309
Printed wrappers. Thirty-four pages with "Description of the Central Black Hills," plus three large fold-out maps, four single page maps, all showing, besides geologic features, roads, railroads and towns, one page of a columnar section and three pages of black and white photographs.Light soiling to covers, small tears beginning at base of fold-out creases, else a very good copy.