1909. Bownocker, J. A. 1865-1928. Scale [1:506,880]. Eight miles to one in. Geologic formations shown by colors and symbols. "Based on preceding maps by Newberry and Orton." "A. Hoe... Geological Survey of Ohio.
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1994. Baranoski, Mark T. compiled by M.T. Baranoski and L.H. Wickstrom. Scale approximately 1:400,000. OSU's copy 1 "Key to references cited on map of Basement Structures i... Ohio. Division of Geological Survey.
1974. Osborne, Robert H. Scale: 1: 24,000. by Robert H. Osborne. Includes marginal and bibliographical references. Ohio. Division of Geological Survey.
1974. Ford, John Philip. Scale: 1:24,000. by John P. Ford. Ohio. Division of Geological Survey.
1972. DeLong, Richard M. by Richard M. DeLong. Scale 1:24,000.
1975. Ohio. Division of Geological Survey. Scale 1:12,000. by Stephen P. Reidel.
1956. Ohio State University. Institute of Geodesy, Photogrammetry and Cartography. Sponsored by the Development Fund, the Graduate School and the Department of Geology. The Anomalies refer to the International Gravity Formula. by ... Ohio. Division of Geological Survey.
1913. Birds's eye view. Title penciled it. Scale drawn in pencil and cannot be distinguished.
1991. Hull, Dennis N. 1948-. Dennis N. Hull, chief compiler. Ohio. Division of Geological Survey.
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.