Albert Hugh Bryan / Arvill Wayne Bitting / Association of Official Agricultural Chemists (U.S.). Convention / Bernhard Conrad Hesse / Fletcher Pearre Veitch / Frederick Levy Dunlap / George Whitfield Stiles / Harvey Washington Wiley / Herbert Charles Gore / James Frank Breazeale / John Kerfoot Haywood / Joseph Arthur Le Clerc / William Bradford Alwood / William Salant / William Woolford Skinner / Curtis Criss McDonnell / John Benjamin Rieger / Marion Gilbert Donk | 