USDA Insecticide Division notebooks on white arsenic : notebooks 1922-1946
Dearborn, F. E ; Smith, Charles Meldrum ; Nelson, Ole Anker ; Smith, Lloyd E ; Barnes, J. W ; Gross, Cecil Robert ; Weisser, J ; Cassil, Carroll Clayton ; Hamilton, E.H ; Preston, Robert K ; Hayes, Robert A ; Green, N ; Claborn, Houston Vernon ; Tonkin, W. H