Chester J. Francis / Dayton L. Klingman / Gordon G. Mark / Horatio Clyde Mason / Hoyle B. Puckett / Irvin Fay Reed / James Vermeer / Leon Havis / M. Connor Ahrens / Marie B. Harmon / Marshall Harris / Norman Allen / Norman Carroll Teter / Orlin James Scoville / Roy Elliott Campbell / United States. Agricultural Research Service. Agricultural Engineering Research Division / Verne Elbert Davison / W. S. Chepil / Wayland Arthur Shands / William A. Junnila / Birely J. Landis / Edgar Alfred Taylor / F. M. Grant / Francis Raymond Lawson / Howard Earl Dorst / Howard Lyle Hill / Irving Rollins Starbird / John M. Lawrence / Neal P. Woodruff / Robert S. Dimmick / Virgil Lee Hurlburt / Warren Cleaton Shaw / F. H. Siddoway / Lawrence V. Compton / William John Reid | 