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1922. 2013-01-22T15:25:48Z. 2015-10-21T15:09:12Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky.
1922. 2010-09-20T17:28:26Z. 2015-10-27T22:25:52Z. Geological Survey (U.S.). The Survey. English. Public. 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.
2012. 2012-04-17T19:11:33Z. 2020-08-14T18:08:27Z. United States. Central Intelligence Agency. Central Intelligence Agency. English. Public. Caspian Sea Region.
1968. 2018-05-01T19:11:10Z. 2018-05-01T19:11:10Z. Haught, Oscar L. West Virginia Geological and Economic Survey. English. cartographic image. Public. West Virginia, Ohio County, Brooke County, Hancock County, Northern Panhandle, Ohio County (W. Va.), Brooke County (W. Va.), Hancock County (W. Va.), Northern Panhandle (W. Va.), Brooke County., Hancock County., Northern Panhandle., and Ohio County.