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.
1889. 2011-05-23T20:09:22Z. 2015-10-21T14:59:48Z. Geological Survey (U.S.). U.S. Dept. of the Interior, Geological Survey. English. Public. Campbell County (Tenn.), Kentucky, Knox (Ky.), Laurel (Ky.), Pulaski (Ky.), Scott County (Tenn.), Tennessee, and Whitley (Ky.).
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.).
1894. 2013-03-13T14:08:42Z. 2015-04-10T20:57:30Z. Hayes, C. W. (Charles Willard), 1859-1916. Engraved and printed by the U.S. Geological Survey, Bailey Wilis, Editor of Geologic Maps, S.J. Kübel, Chief Engraver. English. Public. Tennessee.
1892. 2013-03-15T15:25:40Z. 2013-03-15T15:26:23Z. Hayes, C. W. (Charles Willard), 1859-1916. The Survey. English. Public. Tennessee, Cumberland County, Loudon County, McMinn County, Meigs County, Morgan County, Rhea County, and Roane County.
1895. 2013-03-13T13:54:48Z. 2015-04-10T20:58:33Z. Keith, Arthur. Engraved and printed by the U.S. Geological Survey, Bailey Willis, Editor of Geologic Maps, S.J. Kübel, Chief Engraver. English. Public. Tennessee, North Carolina, and Swain County.