United States. Agricultural Research Service / Allan S. Humpherys / Carl Frederick William Muesebeck / Charles R. Gunn / Floyd E. Moeller / Harry Irving Nightingale / J. Clastrier / K. Sakimura / Kenneth E. Nelson / R. E. Meyer / Thomas D. Eichlin / Hugh B. Cunningham / J. A. Bondurant / Kellie O'Neill / W C. Bianchi / W H. Skrdla / Willis Wagner Wirth / Henry Caleb Spencer | 