Ohio. Division of Geological SurveyScale 1:500,000 ; Lambert conformal conic projection, standard parallels 33⁰ and 45⁰Includes text and 2 key maps showing compilation responsibility and data sources.Includes bibliographical references."Base by the U.S. Geological Survey 1997."compiled by Richard R. Pavey [and others] ; Ohio Department of Natural Resources, Division of Geological Survey.TIFFhttps://hdl.handle.net/1811/7bb2e628-711a-46aa-9e97-cf5f1d51a5eaengOhio. Division of Geological SurveyPublicGeologyQuaternary geology of OhioMapsOhioThe Ohio State University