1. 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)
2. 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)
3. 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)
