![Geological map of the Potomac basin west of Blue Ridge, Virginia and West Virginia : showing the relations of its upper Potomac coal basin and the iron-ore bearing areas in reference to the West Virginia Central and Pittsburg [sic] R.R., and its connections and extensions](https://tile.loc.gov/image-services/iiif/service:gmd:gmd388:g3884:g3884b:cwh00220/full/!1200,1200/0/default.jpg)
Library of Congress — Maps
Geological map of the Potomac basin west of Blue Ridge, Virginia and West Virginia : showing the relations of its upper Potomac coal basin and the iron-ore bearing areas in reference to the West Virginia Central and Pittsburg [sic] R.R., and its connections and extensions
rogers, w. b. · 1882
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