1. 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)
2. Excerpt from Fred Soper's diary Publication: Produced: [1 May-27 July 1929] Subject(s): Yellow FeverBrazilInternational CooperationEpidemiologyFinancial SupportDiagnosisMosquito Control Archival Collection: The Fred L. Soper Papers (Profiles in Science)
