2221. Letter from Fred L. Soper to Lewis Hackett Publication: Produced: 18 October 1955 Subject(s): Financial SupportMosquito ControlYellow Fever Vaccine Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2222. Letter from Lewis Hackett to Fred L. Soper Publication: Produced: 9 March 1958 Subject(s): Lice InfestationsInsect Control Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2223. 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)
2224. Letter from Fred L. Soper to Lewis Hackett Publication: Produced: 20 January 1959 Subject(s): DDTInsect ControlYellow Fever Vaccine Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2225. Letter from Fred L. Soper to Leonel Tavares Miranda de Albuquerque Publication: Produced: 24 August 1967 Subject(s): AedesMosquito ControlBrazilYellow Fever Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2226. Letter from Fred L. Soper to Paulo C. A. Antunes Publication: Produced: 22 August 1967 Subject(s): Yellow FeverMosquito ControlAedesBrazil Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2227. Letter from Fred L. Soper to Paulo C. A. Antunes Publication: Produced: 26 September 1968 Subject(s): BrazilUnited StatesAedesMosquito Control Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2228. Letter from Leona Baumgartner to Fred L. Soper Publication: Produced: 17 May 1966 Subject(s): LeprosyFinancial Support Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2229. Letter from Fred L. Soper to Eugene P. Campbell Publication: Produced: 6 October 1967 Subject(s): Yellow FeverDiagnosis Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2230. Excerpt from Fred Soper's diary Publication: Produced: [21-24 January 1939] Subject(s): Yellow FeverFinancial SupportBudgets Archival Collection: The Fred L. Soper Papers (Profiles in Science)