1890. 2011-05-23T19:50:32Z. 2015-10-21T14:59:48Z. Geological Survey (U.S.). U.S. Dept. of the Interior, Geological Survey. English. Public. Claiborn County (Tenn.), Hancock County (Tenn.), Harlan County (Ky.), Kentucky, Lee County (Va.), Leslie County (Ky.), Tennessee, and Virginia.
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1891. 2011-05-23T19:40:24Z. 2015-10-21T14:59:47Z. Geological Survey (U.S.). U.S. Dept. of the Interior, Geological Survey. English. Public. Bell County (Ky.), Claiborne County (Tenn.), Clay County (Ky.), Kentucky, Knox County (Ky.), Lee County (Va.), Leslie County (Ky.), Tennessee, Virginia, and Whitley County (Ky.).
