1985. Schmidt, James J. by James J. Schmidt. Relief shown by contours and spot heights. Scale 1:62,500 Includes location map. "Total copies printed: 500.". Ohio. Department of Natural Resources.
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1985. Walker, Alfred C. Includes location map. by Alfred C. Walker. Relief shown by contours and spot heights. Scale 1:135,000. Ohio. Department of Natural Resources.
1985. Schmidt, James J. Includes location map. "Total copies printed: 500." by James J. Schmidt. Scale 1:135,000 Relief shown by contours and spot heights. Ohio. Department of Natural Resources.