MapMap showing the economic minerals along the route of the Chesapeake & Ohio Rail Way to accompany the geological report of Thomas S. Ridgway. Covers area from Richmond, Va., to the Ohio River along the route of the railroad and shows the geological sections in which minerals are found. Consolidated from the Virginia Central and Covington and Ohio Railroads in August 1868.
- Contributor: Chesapeake and Ohio Railroad Company - Ridgway, Thomas S. - Maury, Matthew Fontaine
- Date: 1872