1. Geology of the Hico quadrangle, Kentucky [cartographic material] Yale Public content 1965. 2011-06-20T17:24:02Z. 2012-02-14T23:38:56Z. Olive, Wilds W. (Wilds Williamson), 1921-. U.S. Geological Survey. English. Public. Kentucky, Calloway County, and Marshall County.