Albert Ronald Merz, Arnon Lewis Mehring, B. L. Wade, C. C. Plummer, Carl Rohwer, Clyde William Doran, George McMillan Darrow, Jacob Martin Lutz, James F. Bullock, James Munday Walter, Jesse Roy Christie, John Henry Zeller, John Ira Hardy, John Raymond Horton, Joseph Franklin Brandon, Lawrence Paul Batjer, Mark Matthew Regan, Michael Hendrix Langford, Robert Hibbs Peebles, Thomas Earle Smith, Thomas Elliott Snyder, United States. Department of Agriculture, Wylie Daniel Goodsell, Bailey Edgar Brown, Curtis May, Elmer Thomas Jones, Eugene Grissom Moss, Fred A. Clarenbach, Grace P. Vincent, H. O. Hetzer, Harold Jeffers Fulton, Harold William Wolf, James Zetek, John Thomas Cassady, Oscar Roland Mathews, Albert Rudolph Johnson, Charles Walter Collins, Francis Marion Wadley · 1943
Alonzo Clayton Davis, Ernst Artschwager, George Ware Barber, Gustav A. Wiebe, Michael Hendrix Langford, Norma Lenys Pearson, Perley Spaulding, William Bell Cartwright, Lucille Reinbach-Welch, Ruebush George Shands, Philip Russell Cowan · 1944