1. Letter from Lewis Hackett to Fred L. Soper Publication: Produced: 12 January 1959 Subject(s): Insect ControlDDTYellow Fever Vaccine Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2. The Conquest of Typhus Publication: New York Times Company, 4 June 1944 Subject(s): DDTTyphus, Epidemic Louse-BorneInsect Control Archival Collection: The Fred L. Soper Papers (Profiles in Science)
3. Science in Review: DDT, the Army's Insect Powder, Strikes a Blow Against Typhus and for Pest Control Publication: New York Times Company, 4 June 1944 Subject(s): DDTInsecticidesLice InfestationsCommunicable Disease Control Archival Collection: The Fred L. Soper Papers (Profiles in Science)
