1. Letter from Fred L. Soper to Wilbur A. Sawyer Creator: Soper, Fred Lowe, 1893-1977 Date: 7 July 1939 Genre: Letters (correspondence)
2. Excerpt from Fred Soper's diary Creator: Soper, Fred Lowe, 1893-1977 Date: [24 April-30 May 1939] Genre: DiariesExcerpts
3. African Mosquito Ravaging Brazil Date: 27 March 1939 Publisher: New York Times Company Genre: Articles
4. Letter from Fred L. Soper to Wilbur A. Sawyer Creator: Soper, Fred Lowe, 1893-1977 Date: 23 November 1938 Genre: Letters (correspondence)
5. Draft of a Plan for Malaria Control in the Lower Jaguaribe Region: State of Ceara Creator: de Souza Pinto, G. Date: June 1938 Genre: ReportsDrafts (documents)
6. [Stopping mosquitoes at the border] (image 2) Creator: ?The? Rockefeller Foundation Date: [1938-1941] Genre: Photographic prints
7. [Stopping mosquitoes at the border] (image 1) Creator: ?The? Rockefeller Foundation Date: [1938-1941] Genre: Photographic prints
8. [Stopping mosquitoes at the border] (image 3) Creator: ?The? Rockefeller Foundation Date: [1938-1941] Genre: Photographic prints
9. Excerpt from Fred Soper's diary Creator: Soper, Fred Lowe, 1893-1977 Date: [26 February-1 July 1930] Genre: DiariesExcerpts
10. Fights Mental Ills of College Youths Date: 27 June 1927 Publisher: New York Times Company Genre: Articles