1866. 2010-09-10T17:06:31Z. 2020-07-15T18:03:06Z. Johnson, A. J. (Alvin Jewett), 1827-1884. A.J. Johnson. English. Public. Virginia, Delaware, Maryland, and West Virginia.
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1975. 2012-07-11T14:30:17Z. 2021-02-09T17:24:55Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
1979. 2012-07-11T14:37:21Z. 2012-07-11T14:37:21Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and West Virginia.
1949. 2012-07-11T14:42:20Z. 2021-09-28T15:55:00Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and West Virginia.
1979. 2012-07-11T14:48:11Z. 2021-08-17T13:26:29Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
1976. 2012-07-11T14:54:15Z. 2021-03-19T12:34:29Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
1975. 2012-07-11T14:58:52Z. 2021-03-19T12:33:01Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
1953. 2012-07-09T17:59:58Z. 2012-07-09T17:59:58Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and West Virginia.
1982. 2012-07-11T15:02:46Z. 2022-07-11T14:33:23Z. Geological Survey (U.S.). The Survey. English. Public. Maryland and West Virginia.
1985. 2012-07-09T18:10:43Z. 2021-03-19T12:35:37Z. Geological Survey (U.S.). The Survey. English. Public. Maryland.
