1892. 2011-05-31T13:18:01Z. 2015-10-21T15:00:04Z. Geological Survey (U.S.). The Survey. English. Public. Caroline County (Va.), Chesterfield County (Va.), Goochland (Va.), Goochland County (Va.), Goochland Region (Va.), Hanover County (Va.), Henrico County (Va.), Louisa County (Va.), Powhatan County (Va.), and Virginia.
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1892. 2011-05-31T13:22:29Z. 2015-10-21T15:00:05Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Albemarle County (Va.), Culpeper County (Va.), Gordonsville Region (Va.), Greene County (Va.), Louisa County (Va.), Madison County (Va.), Orange County (Va.), and Virginia.