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1966. 2018-05-04T19:39:48Z. 2018-05-04T19:39:48Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. West Virginia and West Virginia.
4. Williamsport quadrangle, Maryland-West Virginia-Pennsylvania, 1944 : 15 minute series (topographic)
1965. 2012-07-25T19:47:07Z. 2022-07-11T15:14:30Z. Geological Survey (U.S.). The Survey. English. Public. Maryland., West Virginia., and Pennsylvania.