ID#: 23395
Caption:
Created in 1965, this photograph depicts Communicable Disease Center (CDC) staff member Mrs. M. Winnifred Collins pointing to numerical scales on the SAD, SA/C Calculator, a circular slide-rule device used in the formulation of insecticides, rodenticides, and pesticides. The device was invented by U.S. Public Health Service (USPHS) and CDC staff members Captain Harold G. Scott, PhD, and epidemiologist Lee Hunter, DVM, MPH.
High Resolution: Click here for hi-resolution image (18.34 MB)
Content Provider(s): CDC/ Capt. Harold G. Scott, PhD
Creation Date: 1965
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