1993. Hull, Dennis N. Includes legend, text, location maps and primary data source maps. compiled by Dennis N. Hull. Scale 1:250,000 Depths shown by bathymetric isolines. Ohio. Division of Geological Survey.
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1984. Hull, Dennis N. by Dennis N. Hull ; cartographic drafting by Leonard M. Guckenheimer and Katherine L. Jennings. Includes location map. Includes bibliography. Ohio. Division of Geological Survey.
1987. Hull, Dennis N. "Contour interval is 10 feet." by Dennis N. Hull. Includes text, bibliography, index and location map. Scale approximately 1:63,360 Relief shown by... Ohio. Division of Geological Survey.