Birely J. Landis / Charles D. Owens / Harry L. Garver / Jean H. Dawson / Jon M. Skovlin / Kenneth Hayes Myers / Llewelyn Williams / Norman Carroll Teter / Richard Lee Hiner / United States. Agricultural Research Service. Agricultural Engineering Research Division / United States. Department of Agriculture / Walter E. Peay / Warren Whitcomb / William J. Ash / William W. Neely / Benjamin F. Detroy / Jerome A. Onsager / John Wesley Rockey / Verne Elbert Davison / William O. Lee / Francis Leonard Timmons / Lawrence V. Compton | 