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- Albert Watts Moore, Carl F. Dunker, Charles D. Converse, Claron Owens Hesse, Elmer Snyder, Everett Eugene Lund, Frank Custer Edminster, Franklin Elmer Allison, Franklin Jacob Crider, George Haymaker Vansell, Guy Weston Bohn, H. O. Hetzer, Harry Edward Goresline, Harry Ream Lochry, Henry Hamilton Bennett, Herbert Spencer, Jesse Edward Harmond, Jesse Wilburn Ingram, Leslie Rushton Hawthorn, Mary Cecelia Whitlock, Myron Sallee Anderson, Oscar Roland Mathews, Ralph William Marquis, United States. Department of Agriculture, Forest G. Bell, Frank N. Harmon, Elbert Hann Reid, Kirby M. Hayes, Leonard M. Klein, Lester Alan Thompson, Max Raymond Osburn, Sidney Fay Blake, Thomas Wallace Whitaker, Alfred W. Otte, Arnon Lewis Mehring, Bert D. Robinson, Paul A. Norman
· 1952
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Paul A. Norman· 1996
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