Scale approximately 1:2,000,000."Adapted from glacial map of Ohio, U.S. Geological Survey Miscellaneous geologic investigations, Map I-316."Title on verso: Glacial map of Ohio.Text on verso.TIFFhttps://hdl.handle.net/1811/151364f6-ac83-409b-b875-a1b7e59f22dfengPublicDriftGlaciersGlacial deposits of OhioMapsOhiobetween 1980 and 1989The Ohio State University