U.S. Department of Health and Human Services | National Institutes of Health
1921-1963 | Hygienic Laboratory | Virology, Polio
1916-1946 | Hygenic Laboratory | Bacteriology, Typhus, Botulism, Trachoma, Anti-toxins
1920-1927 | Hygenic Laboratory | Oxidation-Reduction, Toxins, Lead
1918-1945 | Hygenic Laboratory | Bacteriology, Pasteurization