1891. 2011-05-23T19:47:53Z. 2016-06-03T19:24:08Z. Geological Survey (U.S.). U.S. Dept. of the Interior, Geological Survey. English. Public. Breathitt County (Ky.), Kentucky, Knott County (Ky.), Leslie County (Ky.), Letcher County (Ky.), and Perry County (Ky.).
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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.).
1891. 2011-05-19T18:37:48Z. 2011-05-19T18:37:48Z. U.S. Geological Survey. English. Public. West Virginia, Logan County (W. Va.), Wayne County (W. Va.), Kentucky, Martin County (Ky.), and Pike County (Ky.).
