1951. 2011-12-12T21:28:42Z. 2022-03-29T20:39:35Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and Maryland.
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1905. 2011-12-12T21:28:42Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and Maryland.
1931. 2011-12-12T21:32:32Z. 2022-03-29T20:40:07Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and New Jersey.
1936. 2011-12-12T21:24:41Z. 2022-03-29T20:39:07Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and New Jersey.
1918. 2011-12-12T21:24:41Z. 2022-03-29T20:39:07Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware.
1951. 2011-12-12T21:28:43Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and Maryland.
1900. 2011-12-12T21:28:43Z. 2022-03-29T20:39:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware and Maryland.
8. Cedar Creek
1918. 2011-12-12T21:24:41Z. 2022-03-29T20:39:07Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Delaware.
1904. 2011-05-18T18:40:04Z. 2015-10-21T14:59:29Z. U.S. Geological Survey. English. Public. Caroline County (Md.), Cecil County (Md.), Delaware, Kent County (Del.), Kent County (Md.), Maryland, New Castle County (Del.), New Jersey, and Queen Anne County (Md.).
1906. 2011-05-18T18:35:31Z. 2015-10-21T14:59:28Z. U.S. Geological Survey. English. Public. Caroline County (Md.), Cecil County (Md.), Delaware, Kent County (Del.), Kent County (Md.), Maryland, New Castle County (Del.), New Jersey, and Queen Anne County (Md.).