Bliss F. Dana, Charles C. Johnson, Harold Payne Singleton, Harry L. Garver, James Leonard St. John, John Stuart Carver, R. P. Bean, Richard Thomas Smith, William Jasper Spillman, Joseph Robert Neller, L. W. Cassel · 1924
Ben Henry Pubols, Carl F. Reuss, Edwin F. Dummeier, Emmett Idolia Robertson, Kermit Groves, O. E. Barbee, State College of Washington. Agricultural Experiment Station, Wilford Hermann, Woodrow W. Rufener, Carl Phillip Heisig, Edwin George Schafer, Herman Fallscheer, J. W. Cook, Alden E. Orr, James Marshall, John Stuart Carver · 1938