1341. 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)
1342. 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)
1343. 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)
1344. 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)
1345. 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)
1346. 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)
1347. 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)
1348. Letter from Fred L. Soper to Leona Baumgartner Publication: Produced: 20 May 1966 Subject(s): LeprosyFinancial SupportLibraries, MedicalFinancing, Government Archival Collection: The Fred L. Soper Papers (Profiles in Science)
1349. Letter from Pedro Galindo to Fred L. Soper Publication: Produced: 27 June 1966 Subject(s): Fellowships and Scholarships Archival Collection: The Fred L. Soper Papers (Profiles in Science)
1350. Letter from Fred L. Soper to Pedro Galindo Publication: Produced: 24 May 1966 Subject(s): Yellow FeverFellowships and Scholarships Archival Collection: The Fred L. Soper Papers (Profiles in Science)