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.).
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1893. 2011-06-01T13:55:39Z. 2015-10-21T15:00:11Z. U.S. Geological Survey. English. Public. Claiborne County (Tenn.), Cocke County (Tenn.), Grainger County (Tenn.), Greene County (Tenn.), Hamblen County (Tenn.), Hancock County (Tenn.), Hawkins County (Tenn.), Jefferson County (Tenn.), and Tennessee.
