1. 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)
2. Excerpt from Fred Soper's diary Publication: Produced: [1 January-30 April 1928] Subject(s): Yellow FeverMosquito ControlBrazilOrganization and Administration Archival Collection: The Fred L. Soper Papers (Profiles in Science)