- Arthur Henry Senner, Arthur Truman Semple, Carl A. Taylor, Caroline Baldwin Sherman, Charles Felix Doucette, Charlotte Elliott, Clarice Louisba Scott, George Henry Hepting, Henry F. Bain, James Francis Martin, Jesse Wilburn Ingram, John Robert Magness, Juan Brewer Demaree, Lucy Maclay Alexander, Margaret Smith, Philip Farley Allan, R. T. Cotton, Rush Porter Marshall, Theodore P. Dykstra, Thomas K. Killand, Wilbur Reed Mattoon, William Carmichael Cook, William Henry White, E. K. Bynum, G. F. Gravatt, George B. Wagner, Mason August Hein
· 1942
- Arnold Kent Balls, Earl W. McComas, Erastus Newton Bates, Hamilton Paul Traub, Jacob Allen Clark, Mark Hughlin Haller, Ralph Corbin Hall, Walter Jay Hall, William Alvin Douglas, William Doyle Reed, Harold Edwin Stevens, James Edwin Comfort, Jesse Wilburn Ingram, John Paul Vinzant, Karl Spangler Quisenberry, Marian William Hazen, T. Ralph Robinson
· 1941
- Lela Evangeline Booher, Robert Van Rensselaer Reynolds, Arlo McGrillis Vance, Arnold Kent Balls, B. L. Wade, Clarence Francis Kelly, Earl W. McComas, Erastus Newton Bates, Frank Shirley Chamberlin, George Haymaker Vansell, Hamilton Paul Traub, Hazel Katherine Stiebeling, Herbert Halden Walkden, James William Park, John Paul Miller, Ralph Corbin Hall, Robert Hibbs Peebles, Roger Ulysses Swingle, Russell Rutherford Whitten, W. A. Douglas, Walter Jay Hall, William Doyle Reed, William Henry Black, United States. Department of Agriculture, Albert Halsey Pierson, Archie Hugh Madden, Burwell Britt Powell, Eva R. Hartzler, Jesse Wilburn Ingram, John Paul Vinzant, Malcolm Ernest Smith, Marian William Hazen, Sadye Frances Adelson, T. Ralph Robinson, Verner Ivan Clark, Elizabeth Margaretta Hewston, Ennis C. Blake, Harold Edwin Stevens, James Edwin Comfort
· 1942
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