1919. Cowen, Clinton. Scale approximately 1:126,720. 1 in. = 2 miles. Scale approximately 1:88,000. 1 in. = 4 miles. "Copyright 1919 by Clinton Cowen, State Highway Comm... Printing Commission of Ohio.
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1919. Cowen, Clinton. Scale approximately 1:126,720. 1 in. = 2 miles. "Copyright 1919 by Clinton Cowen, State Highway Commissioner, for the State of Ohio.". Printing Commission of Ohio.