MapMap showing the projected route of the Potomac and Ohio Railway. Middle Atlantic area showing drainage, cities and towns, county boundaries, coal in West Virginia and the railroads with emphasis on the main line. Incorporated by the West Virginia legislature, 1867-68.
- Contributor: G.W. & C. Colton & Co. - Potomac and Ohio Railway
- Date: 1874
MapMap showing the West Virginia Midland Railway and its connections. Map of West Virginia showing relief by hachures, drainage, cities and towns, and the railroad network with emphasis on the main line.
- Contributor: G.W. & C. Colton & Co. - West Virginia Midland Railroad
- Date: 1883