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David Leroy Yarnell, Earl Dewey Mallison, Harry Waltner Titus, Hickman Charles Murphy, Howard E. Middleton, Maulsby Willett Blackman, Mortimer Reed Lewis, Roderick Sprague, Walter Ernest Fleming, Albert B. Godfrey, Charles Lincoln Powell, Francis Everett Baker, Horace Greeley Byers, Hurley Fellows, Willard Walker Aldrich, Clarence Sheldon Slater, Robert Archibald Work· 1934
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Arthur Henry Senner, Boyce D. Ezell, C. J. Babcock, David Leroy Yarnell, Earl Dewey Mallison, Frank M. Eaton, George Thomas Ratliffe, Harry Vaughn Harlan, Harry Waltner Titus, Hickman Charles Murphy, Howard E. Middleton, Howard Vernon Jordan, Hugh Hackland Darby, J. I. Lauritzen, James William Park, John Clifford Elmore, John Thomas Lucker, Lucy Maclay Alexander, Maulsby Willett Blackman, Mortimer Reed Lewis, Roderick Sprague, W. G. Bradley, Walter Ernest Fleming, Wells Aleck Hutchins, Albert B. Godfrey, Alonzo Clayton Davis, Charles Lincoln Powell, Clarence Sheldon Slater, Eleanor Muriel Kapp, Emory Dwight Burgess, Francis Everett Baker, Helmut Charles Diehl, Hurley Fellows, Nancy Griswold Clark, Philip Russell Cowan, R. T. Balch, Robert Archibald Work, Horace Greeley Byers, Roy Elliott Campbell, Willard Walker Aldrich· 1934
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Albert B. Godfrey, Arnon Lewis Mehring, Bill Howard Wilford, Clayton Leon Farrar, Dean Humboldt Rose, E. A. McGregor, Elroy M. Pohle, George Henry Hepting, Helmut Charles Diehl, Lewis Thompson Leonard, Mark Hughlin Haller, Marshall Tracy Deonier, Oscar Conrad Magistad, R. T. Cotton, Raymond Boorman Wilcox, Royall Oscar Eugene Davis, Thomas Arrington Huntington Miller, United States. Agricultural Research Administration, Verne Lester Harper, Victor Rickman Boswell, William Henry Black, William Stacy Anderson, Herbert Floyd Bergman, Jerald Emmet Christiansen, John Robert Magness, K. F. Warner, Lanoy Nelson Hazel, Robert Claude Wright, Thomas S. Buchanan, Verner Ivan Clark, Wallace Ashby, Cyril Oliver Bratley, Henry R. Keller, John Henry Zeller, Lyle W. R. Jackson· 1944