1994. 2010-08-26T17:44:32Z. 2021-10-01T21:32:59Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Adams County (Pa.).
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1911. 2012-08-07T18:39:50Z. 2013-03-18T22:10:06Z. U.S. Geological Survey. English. Public. Maryland, Carroll County (Md.), Frederick County (Md.), Pennsylvania, and Adams County (Pa.).
1925. 2021-10-08T18:39:08Z. 2021-10-09T03:01:52Z. General Service Schools (U.S.), compiler. General Service Schools. English. cartographic image. Public. Adams County (Pa.), Frederick County (Md.), Emmitsburg (Md.), Maryland, Emmitsburg., Frederick County., Pennsylvania, and Adams County.