1. Geologic map of the Ballardsville quadrangle, north-central Kentucky [cartographic material] Yale Public content 1977. 2012-06-04T19:19:50Z. 2012-06-13T15:04:02Z. Kepferle, Roy Clark, 1926-. U.S. Geological Survey. English. Public. Kentucky, Shelby County, Oldham County, Henry County, and U.S.