Plate 1. A, Thumbnail of the geologic map of the Harpers Ferry quadrangle, Virginia, Maryland, and West Virginia
[Plate is a separate PDF file in one of two resolutions: 72-dot per inch version (868 KB) | 150-dot per inch version (6 MB)]

U.S. Geological Survey, U.S. Department of the Interior
This page is https://pubs.usgs.gov/bulletin/b2123/plate1.html
Contact: Scott Southworth
Last modified 08.29.00