1948. Alkire, Robert L. 1910-. Includes index to oil and gas fields. Includes: Generalized section of rocks of Ohio. Scale [1:380,160] compiled by Robert L. Alkire ; drafting by ... Ohio. Division of Geological Survey.
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1948. Lamborn, Raymond E. 1890-. by Raymond E. Lamborn. "Base from topographic maps of U.S. Geological Survey." Relief shown by contours and spot heights. Scale 1:62,500. Ohio. Division of Geological Survey.
1948. Flint, Norman K. 1921-. Scale 1:62,500 "Base from U.S. Geological Survey topographic maps." Relief shown by contours and spot heights. by Norman K. Flint ; Geological Surv... Ohio. Division of Geological Survey.
1948. Scale approximately 1:95,000; Panel title.