1976. Sherman, C. E. 1869-1940. Scale [1:380,160] : Published originally to accompany: Original Ohio land subdivisions ... Ohio Cooperative Topographic Survey / by C.E. Sherman. b... Ohio. Division of Geological Survey.
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1951. Norris, Stanley Eugene, 1916-. Scale not given. Library's copy 2 mounted on cloth backing. "April 1951." Relief shown by contours; contour interval 100 feet. Includes index map. ... Ohio. Division of Geological Survey.