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1912. 2011-12-12T21:28:46Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland and Pennsylvania.
1986. 2012-07-24T15:54:25Z. 2021-09-27T17:10:37Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and Pennsylvania.
1975. 2012-07-24T15:45:26Z. 2012-07-24T15:45:26Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
1981. 2016-06-21T13:27:53Z. 2016-09-26T17:42:51Z. Duigon, Mark T. State of Md., Dept. of Natural Resources, Md. Geological Survey. English. cartographic image. Public. Maryland and Hampstead Region.
106. Hanesville
1977. 2012-07-24T15:25:33Z. 2021-02-09T17:40:20Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
1985. 2012-07-24T15:39:13Z. 2012-07-24T15:39:13Z. Geological Survey (U.S.). The Survey ; For sale by the Survey. English. Public. Maryland.
1894. 2013-03-13T13:44:14Z. 2013-03-14T14:55:49Z. Keith, Arthur. U.S. Geological Survey. English. Public. Virginia, West Virginia, and Maryland.
109. Harrington
1918. 2011-12-12T21:24:41Z. 2022-03-29T20:39:07Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and Maryland.
1942. 2011-12-12T21:28:46Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland and Pennsylvania.
