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Jones, Bradley O., 1889-1957
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Kellogg, Robert H.
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Kettering, Charles Franklin, 1876-1958
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Kock, Winston E., 1909-1982
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Leather Research Laboratory
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Licht, William
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Miami and Erie Canal (Ohio)
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Modjeski, Ralph, 1861-1940
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Norris Lake (Tenn.)
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Ohio River--Pollution
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Old Chemistry Building (Cincinnati, Ohio)
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Osborn, Cyrus R.
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Osterbrock, William C., 1893-1951
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Pan American Highway System
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Phosphorus
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Pupin, Michael Idvorsky, 1858-1935
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Roebling Suspension Bridge (Cincinnati, Ohio, and Covington, Ky.)
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Schenectady (N.Y.)
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Schneider, Herman, 1872-1939
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Sewage disposal
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