1960. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water Text includes information about generalized stratigraphic sequence of the rocks in ... Ohio. Division of Water.
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1960. Schmidt, James J. Scale bar lower left corner of map. Map side also contains legend and explanation of map symbols. "Prepared by JAMES J. SCHMIDT, Geologist, Ohio Di... Ohio. Division of Water.
1960. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water Map side also contains legend and explanation of map symbols. Scale bar lower right... Ohio. Division of Water.
1960. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Map side also contains legend and explanation... Ohio. Division of Water.
1960. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Map side also contains legend and explanation... Ohio. Division of Water.
1960. Pree, Henry L. (Henry Louis), 1917-. 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.
1960. Cummins, James W. Scale bar lower left corner of map. Map side also contains legend and explanation of map symbols. Text includes information about generalized strat... 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.
1960. Shearrow, George G. Scale [1:380,160] revised by ... George G. Shearrow and Theodore DeBrosse ; drafting by Harold J. Flint and Fletcher W. Twitty. Includes table of "... Ohio. Division of Geological Survey.
1960. Hollingsworth, John McHenry, 1823-1889 and Kingsbury, Robert C. Detached from: Kingsbury, Robert C. Atlas of Indiana, page 42. In lower left margin: A study in toponymy. Scale approximately 1:1,950,000. Department of Geography, Indiana University.