1962. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Text includes information about generalized s... Ohio. Division of Water.
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1962. Stein, Russell B. Prepared by RUSSELL B. STEIN, Geologist, Ohio Division of Water Map side also contains legend and explanation of map symbols. Scale bar lower right... Ohio. Division of Water.
1961. Schmidt, James J. Scale bar lower left corner of map. Text includes information about generalized stratigraphic sequence of the rocks in the Walnut Creek Basin and q... Ohio. Division of Water.
1960. Pree, Henry L. (Henry Louis), 1917-. Text includes information about generalized stratigraphic sequence of the rocks in the Whiteoak Creek Basin and quality of underground water. Scale... Ohio. Division of Water.
1959. Schmidt, James J. Map side also contains legend and explanation of map symbols. Scale bar lower right corner of map. "Prepared by JAMES J. SCHMIDT, Geologist, Ohio D... Ohio. Division of Water.
1959. Walker, Alfred C. Text includes information about generalized stratigraphic sequence of the rocks in the Tiffin Basin and the quality of underground water. Map side ... Ohio. Division of Water.
1959. Walker, Alfred C. Map side also contains legend and explanation of map symbols. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water, from data compiled ... Ohio. Division of Water.
1959. Walker, Alfred C. Map side also contains legend and explanation of map symbols. Text includes information about generalized stratigraphic sequence of the rocks in th... Ohio. Division of Water.
1962. Stein, Russell B. Prepared by RUSSELL B. STEIN, Geologist, Ohio Division of Water Text includes information about generalized stratigraphic sequence of the rocks in ... Ohio. Division of Water.
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.