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1955. 2018-06-14T18:16:36Z. 2018-09-05T20:07:46Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. United States and United States.
1970. 2018-05-29T18:46:45Z. 2018-05-29T18:46:45Z. Cardwell, Dudley H. West Virginia Geological Survey. English. cartographic image. Public. West Virginia and West Virginia.
1976. 2018-05-29T18:42:35Z. 2018-05-29T18:42:35Z. Cardwell, Dudley H., cartographer. West Virginia Geological and Economic Survey. English. cartographic image. Public. West Virginia and West Virginia.
1932. 2010-08-31T18:24:04Z. 2015-10-27T22:25:36Z. Pennsylvania. Bureau of Topographic and Geologic Survey. Topographic and Geologic Survey. English. Public. Pennsylvania.
1945. 2018-05-24T18:43:27Z. 2018-05-24T18:43:27Z. Born, Kendall E. (Kendall Eugene), 1908-. State of Tennessee, Dept. of Conservation, Division of Geology. English. cartographic image. Public. Tennessee and Tennessee.
1968. 2018-05-15T17:57:06Z. 2018-05-15T17:57:06Z. Meents, Wayne Franklin. State of Illinois, Dept. of Registration and Education, Illinois State Geological Survey. English. cartographic image. Public. Illinois, Illinois., and États-Unis.
2001. 2002-06-01T04:00:00Z. 2023-02-11T04:55:14Z. United States. Central Intelligence Agency. Central Intelligence Agency. English. Public. Caspian Sea Region and Black Sea Region.
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