1919. 2018-05-09T18:09:37Z. 2018-09-05T19:42:09Z. Browning, I. B., cartographer. Department of Geology and Forestry of Kentucky,Williams-Webb Co. English. cartographic image. Public. Kentucky, Knott County, Knott County (Ky.), and Knott County.
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2. 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.