1962. Pree, Henry L. (Henry Louis), 1917-. Scale bar lower left corner. Map side also contains legend and explanation of map symbols. Text includes information about generalized stratigraphi... Ohio. Division of Water.
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1856. Graham, J. D. (James Duncan), 1799-1865, Mayer, J. R. (John R.), and United States. Army. Corps of Topographical Engineers. 1 map ; 51 x 70 cm "Soundings are in feet and tenths of a foot." "The figures on land express the elevations above the lake surface in feet and dec...