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American Petroleum Institute
2
Fanning, Leonard M.
2
Giddens, Paul H. (Paul Henry), 1903-1984
2
Arnold, Ralph, 1875-1961
1
Brookings Institution
1
Cicchetti, Charles J.
1
Fuchs, Walter (Walter Maximilian), 1891-1957
1
Henry, J. T.
1
Kemnitzer, William J.
1
Miller, Ernest C. (Ernest Conrad), 1912-
1
Mohr, Anton, 1890-1968
1
Pennsylvania Historical Commission
1
Pennsylvania Historical and Museum Commission
1
Quandt, William B.
1
Reinholt, Oscar H. (Oscar Halvorsen), 1876-
1
Utton, Albert E., 1931-1998
1
Wolbert, George S.
1