1. Stratigraphy and structure of the western Kentucky fluorspar district Author/Creator: Trace, Robert Denny, 1917- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1984 Resource Type: Book Access & Availability: Loading
2. Surface geology of the Jeptha Knob cryptoexplosion structure, Shelby County, Kentucky Author/Creator: Cressman, Earle Rupert, 1923- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1981 Resource Type: Book Access & Availability: Loading