1900. 2011-12-12T21:28:41Z. 2022-03-29T20:39:35Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland, Pennsylvania, and West Virginia.
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1900. 2011-12-12T21:36:12Z. 2022-03-29T20:40:33Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
3. Erie, Penn
1900. 2011-12-12T21:36:12Z. 2022-03-29T20:40:33Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
1900. 2011-12-12T21:36:13Z. 2022-03-29T20:40:33Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
1900. 2011-12-12T21:28:45Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland, Pennsylvania, and West Virginia.
6. Gaines, Penn
1900. 2011-12-12T21:36:13Z. 2022-03-29T20:40:33Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
7. Girard, Penn
1900. 2011-12-12T21:36:14Z. 2022-03-29T20:40:33Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
1900. 2012-06-29T14:08:07Z. 2017-05-09T13:36:39Z. U.S. Geological Survey. English. Public. Maryland, Washington County (Md.), Allegany County (Md.), West Virginia, Morgan County (W. Va.), Hampshire County (W. Va.), Pennsylvania, Bedford County (Pa.), and Fulton County (Pa.).
1900. 2011-12-12T21:28:49Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Maryland, Pennsylvania, and West Virginia.
1900. 2004-01-13T19:12:35Z. 2018-10-10T21:37:36Z. Rand McNally and Company, cartographer, publisher. Rand, McNally & Co. English. cartographic image. Public. Pennsylvania.
