Arthur Henry Joel, Charles Calvert Smoot, Charles Knesal Cooperrider, Clarence Sheldon Slater, Cyril Oliver Bratley, Eugenia Cuvillier, George Henry Hepting, George Luther Schnur, George W. Barber, George Wallace Musgrave, Harold Blaisdell Shepard, Herbert George Barott, James Stewart Wiant, James William Park, Lawrence Zeleny, Lewis Bertie Olmstead, Margaret Blanche Hays, Norman Julian Wall, Paul Lewis Harding, R. L. Piemeisel, R. W. Leukel, Stephen Harold Hastings, Stuart Bevier Show, William Henry Black, Barnard Andrew Hendricks, Dan Hansen, David Augustus Coleman, E. I. Kotok, Edwin Alfonso Trowbridge, F. F. Dicke, Francis Raymond Lawson, George Grant Hedgcock, Jacob Martin Lutz, Oscar Roland Mathews, R. S. Holmes, Ralph Wylie Frey, Robert Arthur Norton, J. I. Hardy, Dean Humboldt Rose, Horace Greeley Byers · 1937
J. I. Hardy, Thora M. Plitt Hardy, Bradford Knapp (Jr.), C. G. Cole, Charles Edward Kellogg, E. G. Davis, E. W. Faires, Edgar Sharp McFadden, Edwin Joseph Woolfolk, Erston Vinton Miller, Felix Scott Lagasse, Harold Hall McKinney, Harold Thomas Lingard, Henry Howard Finnell, Henry Thomas Converse, Herbert Spencer, Hugh Hill Wooten, J. C. Hamlin, Joseph Frank Pechanec, Sarah Little Yarnall, Walker Myrick Dawson, William D. Bedard, William H. Scofield, United States. Department of Agriculture, Alfred Leroy Baker, Charles Francis Bassett, George Stewart, George Streator Templeton, Luther Brown, Margaret Ruth Purcell, Ralph W. Phillips, Robert Donald Davidson, Robert Ray Henley, William Carl McDuffie, Allan Joseph Ernest Suitor, Arthur M. Phillips, Earl Beach Krantz, Frank V. Lieberman, Richard Turnbull Clark, Robert Kendall Enders · 1950