1971. 2012-03-16T14:53:44Z. 2012-03-27T23:59:41Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky, Pike County, and Virginia.
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1971. 2012-03-01T19:22:46Z. 2016-09-30T18:16:00Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Virginia, Lee County, Kentucky, and Harlan County.
3. Great Fox Island quadrangle, Maryland-Virginia, 1968 : 7.5 minute series (topographic-bathymetric)
1971. 2012-07-24T17:10:39Z. 2021-09-28T12:33:55Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and Virginia.
1971. 2012-07-05T19:22:26Z. 2021-10-01T21:33:07Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and Virginia.