Washington, DC: United States Geological Survey [USGS], 1909. First Edition. Large folio. Item #32699
Printed wrappers. Twenty-four pages with "Description of the Trenton Quadrangel," with three full-page maps showing, besides geologic features, roads, railroads and towns, one page of Columnar Sections, and two pages of "Geologic Atlas of the United States." Covers lightly toned. A very good copy.