1991. Hull, Dennis N. 1948-. Dennis N. Hull, chief compiler. Ohio. Division of Geological Survey.
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1993. Hull, Dennis N. 1948-. Includes descriptive index to roadside geological features. Scale approximately 1:750,000. "Publication date: 5/93." by Dennis N. Hull. Panel title... Ohio. Division of Geological Survey.
1984. Hull, Dennis N. 1948-. Includes bibliography. Includes tables, water well logs and location map. by Dennis N. Hull ; cartographic drafting by David E. Richardson. Ohio. Division of Geological Survey.
1987. Hull, Dennis N. 1948-. Relief shown by contour lines and spot heights. Includes text, bibliography, index and location map. by Dennis N. Hull. Scale approximately 1:63,36... Ohio. Division of Geological Survey.