1953. 2018-06-21T20:08:01Z. 2018-06-21T20:08:01Z. Rothrock, Howard Eugene, 1893-. U.S. Dept. of the Interior, Geological Survey. English. cartographic image. Public. Pennsylvania, Northumberland County, Schuylkill County, Northumberland County., and Schuylkill County.
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1953. 2018-06-21T19:58:36Z. 2018-06-21T19:58:36Z. Haley, Boyd Raymond, 1922-. Dept. of the Interior, U.S. Geological Survey. English. cartographic image. Public. Pennsylvania, Columbia County, Schuylkill County, Columbia County., and Schuylkill County.
1953. 2018-06-21T19:55:47Z. 2018-06-21T19:55:47Z. Stafford, Philip T. U.S. Geological Survey. English. cartographic image. Public. Kentucky, Breathitt County, Leslie County, Perry County, U.S., Breathitt County., Leslie County., and Perry County.
4. Principal coal beds in the Troublesome quadrangle, Breathitt, Knott, and Perry Counties, Kentucky
1953. 2018-06-21T19:42:46Z. 2018-06-21T19:42:46Z. Williamson, A. D. The Survey. English. cartographic image. Public. Kentucky, Knott County, Breathitt County, Perry County, Breathitt County., Knott County., and Perry County.
