1893. 2011-06-01T13:29:03Z. 2015-10-21T15:00:10Z. U.S. Geological Survey. English. Public. Anderson County (Tenn.), Campbell County (Tenn.), Knox County (Tenn.), Morgan County (Tenn.), Roane County (Tenn.), Scott County (Tenn.), and Tennessee.
1893. 2011-06-01T13:49:13Z. 2015-10-21T15:00:11Z. U.S. Geological Survey. English. Public. Anderson County (Tenn.), Blount County (Tenn.), Knox County (Tenn.), Loudon County (Tenn.), McMinn County (Tenn.), Monroe County (Tenn.), Roane County (Tenn.), and Tennessee.
1893. 2011-06-01T13:50:42Z. 2015-10-21T15:00:11Z. U.S. Geological Survey. English. Public. Cannon County (Tenn.), Coffee County (Tenn.), DeKalb County (Tenn.), Grundy County (Tenn.), Sequatchie County (Tenn.), Tennessee, Van Buren County (Tenn.), Warren County (Tenn.), and White County (Tenn.).
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.
1893. 2011-05-26T18:53:20Z. 2015-10-21T15:00:01Z. Geological Survey (U.S.). Geological Survey. English. Public. Jones County (Tex.), Shackelford County (Tex.), and Texas.
1893. 2011-05-26T19:42:43Z. 2015-10-21T15:00:02Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Menard County (Tex.), Schleicher County (Tex.), Sutton County (Tex.), and Texas.