1917. Ohio State University. Scale approximately 1:6000. 1 in. = 500 ft. Bird's-eye view. [Ohio State University]. Ohio State University.
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1862. United States. Army. Corps of Engineers. Cincinnati (Ohio)--Maps.
1909. New-York Coal Company. Scale not given. Map traced. W.C.W. Angler, Mining and Civil Engineer, Wellston, Ohio ; original map by J.W. Jones, Civil and Mining Engineer, New ... New-York Coal Company.
1947. White, George W. (George Willard), 1903-1985. compiled by Geo. W. White. Scale approximately 1:56,000. Ohio. Division of Geological Survey.
1947. White, George W. (George Willard), 1903-1985. compiled by Geo. W. White. Scale approximately 1:56,000. Ohio. Division of Geological Survey.
1947. White, George W. (George Willard), 1903-1985. Scale approximately 1:56,000. compiled by Geo. W. White. Ohio. Division of Geological Survey.
1977. Duffield, Susan L. Base map by U.S. Geological Survey. Scale approximately 1:500,000 compiled by Susan L. Duffield ; cartographer, R. Anne Berry. Ohio. Division of Geological Survey.
1947. Geological Survey of Ohio. Library's c.2 mounted on cloth backing. "Prepared in cooperation with Division of Labor Statistics, Department of Industrial Relations, Divisions o... Ohio. Division of Geological Survey.
1947. Geological Survey of Ohio. Library's c.2 mounted on cloth backing. "Prepared in cooperation with Division of Labor Statistics, Department of Industrial Relations, Divisions o... Ohio. Division of Geological Survey.
1957. Smith, Robert W. Base map by U.S. Geological Survey. compiled by Robert W. Smith. Scale 1:500,000 ; Lambert conformal conic projection. Ohio. Division of Geological Survey.