Wikimedi'Òc

Bulletin of the Geological Society of America (1923) (14595339817).jpg - SteinsplitterBot

Jefferson, Berkeley, and Morgan counties, by G.P. Grimsley, assistant geologist. I.C. White, state geologist (1916) (14597845107).jpg - SteinsplitterBot

Bulletin of the Geological Society of America (1923) (14778711541).jpg - SteinsplitterBot

NPS shenandoah-geologic-map.jpg - RKBot

NPS valley-forge-geologic-map.jpg - RKBot