21. 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)
22. 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)
23. Memorandum from Fred L. Soper to Abraham Horwitz Publication: Produced: 20 August 1974 Subject(s): Global HealthYellow FeverPublishing Archival Collection: The Fred L. Soper Papers (Profiles in Science)
24. 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)
25. Letter from Pedro Galindo to Fred L. Soper Publication: Produced: 18 May 1966 Subject(s): Yellow FeverFellowships and ScholarshipsEducation, Graduate Archival Collection: The Fred L. Soper Papers (Profiles in Science)
26. Instruccoes para Representantes do Servico do Febre Amarella em Postos de Viscerotomia [Instructions for Representatives of the Yellow Fever Service on Viscerotomy Posts] Publication: The Brazilian Ministry of Health, [ca. 1937] Subject(s): Yellow FeverDiagnosis Archival Collection: The Fred L. Soper Papers (Profiles in Science)
27. Excerpt from Fred Soper's diary Publication: Produced: [May-June 1928] Subject(s): Yellow FeverDiagnosisEpidemiologyFinancial Support Archival Collection: The Fred L. Soper Papers (Profiles in Science)
28. Memorandum from M. E. Connor to Clementino Fraga Publication: Produced: 7 June 1928 Subject(s): BrazilYellow FeverDiagnosisEpidemiology Archival Collection: The Fred L. Soper Papers (Profiles in Science)
29. Excerpt from Fred Soper's diary Publication: Produced: [1 January-16 February 1929] Subject(s): Yellow FeverFinancial SupportEpidemiology Archival Collection: The Fred L. Soper Papers (Profiles in Science)
30. Excerpt from Fred Soper's diary Publication: Produced: [14-30 April 1929] Subject(s): Yellow FeverEpidemiologyDiagnosisBrazil Archival Collection: The Fred L. Soper Papers (Profiles in Science)