1993. Hansen, Michael C. Scale not given. Panel title. by Michael C. Hansen. Text, satellite image of southern Ohio and 2 block diagrams. "Publication date: 8/93.". Ohio. Division of Geological Survey.
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1917. Ohio State University. Scale approximately 1:6000. 1 in. = 500 ft. Bird's-eye view. [Ohio State University]. Ohio State University.
1956. Bier, James Allen. Scale 1:1,250,000. "Based primarily on U.S.G.S. topographic maps.". Ohio. Division of Geological Survey.
1923. Columbus (Ohio). City Planning Commission. Scale approximately 1:20,117. Shows use districts, height districts, and area districts. City Planning Commission ; Robert Whitten, consultant ; A.... City Planning Commission.