1. Geologic map of parts of the West Franklin, Caborn and Mount Vernon quadrangles, Henderson and Union counties, Kentucky [cartographic material] Yale Public content 1974. 2012-04-19T19:45:37Z. 2012-05-03T15:40:24Z. Johnson, William D., Jr. U.S. Geological Survey. English. Public. Kentucky, Henderson County, Union County, Indiana, and Posey County.