D. W. Albert, George Edson Philip Smith, Harry Embleton, James Frank Breazeale, James Greenlief Brown, Robert Lavern Matlock, H. C. Morse, James R. Kennedy, Milton M. Evans, Robert Harry Hilgeman, Rubert Burley Streets, Stanley Penryn Clark · 1934
Andrew Vanvig, George Wilbert Barr, H. Fred Arle, Howard Paul Cords, Karl Harris, Paul Douglas Keener, Paul Nicholas Wilson, Robert Harry Hilgeman, Everett Henry Everson, William E. Hart, Roger H. Coupal · 1954
Charles Taylor Vorhies, Elzer Des Jardines Tetreau, George Edson Philip Smith, Margaret Cammack Smith, Robert Harry Hilgeman, William Thomas McGeorge, Evelyn Lyman Blanchard, University of Arizona. Agricultural Experiment Station, Walter Penn Taylor, William Allen Frazier, Malcolm Frederic Wharton, Norma Sayre · 1940
