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Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. Transcript. 6 Images. [4-24 May 1926].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. Transcript. 2 Images. 13 April 1927.
"Fights Mental Ills of College Youths." New York Times, (27 June 1927): 12. Article. 3 Images.
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. Transcript. 5 Images. [9 September-12 November 1927].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. Transcript. 23 Images. [1 January-30 April 1928].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 22 Images. [May-June 1928].
Connor, M. E. Memorandum from M. E. Connor to Clementino Fraga. Memorandum. 5 Images. 7 June 1928.
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 8 Images. [1 January-16 February 1929].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 10 Images. [14-30 April 1929].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 32 Images. [1 May-27 July 1929].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 23 Images. [28 July-31 December 1929].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 46 Images. [26 February-1 July 1930].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 23 Images. [2 July-31 August 1930].
Soper, Fred L., M. Frobisher Jr, J. A. Kerr, and N. C. Davis. "Studies of the Distribution of Immunity to Yellow Fever in Brazil." Journal of Preventive Medicine 6, 5 (September 1932): 341-377. Article. 37 Images.
Soper, Fred L. "The New Epidemiology of Yellow Fever." American Journal of Public Health 27, 1 (January 1937): 1-14. Article. 14 Images.
Yellow Fever Service. "Instruccoes para Representantes do Servico do Febre Amarella em Postos de Viscerotomia [Instructions for Representatives of the Yellow Fever Service on Viscerotomy Posts]." Pamphlet. 14 Images. [ca. 1937].
de Souza Pinto, G. "Draft of a Plan for Malaria Control in the Lower Jaguaribe Region: State of Ceara." Draft. Report. 5 Images. June 1938.
Soper, Fred L. Letter from Fred L. Soper to Wilbur A. Sawyer. Letter (correspondence). 4 Images. 23 November 1938.
Soper, Fred L., and H. H. Smith. "Vaccination with Virus 17D in the Control of Jungle Yellow Fever in Brazil." Transactions of the Third International Congress of Tropical Medicine and Malaria 1, (1938): 295-313. Article. 20 Images.
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 3 Images. [21-24 January 1939].
"African Mosquito Ravaging Brazil." New York Times, (27 March 1939): 17. Article. 1 Image.
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 1 Image. 17 April 1939.
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 20 Images. [24 April-30 May 1939].
Soper, Fred L. [Excerpt from Fred Soper's diary]. Diary. Excerpt. 6 Images. [13-20 June 1939].
Soper, Fred L. Letter from Fred L. Soper to Wilbur A. Sawyer. Letter (correspondence). 3 Images. 7 July 1939.
Hackett, Lewis. Letter from Lewis Hackett to Fred L. Soper. Letter (correspondence). 1 Image. 15 December 1939.
Soper, Fred L. Letter from Fred L. Soper to Lewis Hackett. Letter (correspondence). 1 Image. December 1939.
"Deadly Mosquito Wiped Out in Brazil." New York Times, (19 March 1941): 23. Article. 1 Image.
Strode, George K. Letter from George K. Strode to Wilbur A. Sawyer. Letter (correspondence). 3 Images. 2 January 1943.
Soper, Fred L., and National Yellow Fever Service of Brazil. "Boletim De Inspecoes Do Guarda." Chart. 1 Image. 9 February 1943.
Soper, Fred L., D. Bruce Wilson, Servulo Lima, and Waldemar de Sa Antunes. "The Organization of Permanent Nation-Wide Anti-Aedes Aegypti Measures in Brazil." Rockefeller Foundation, 1943. Monograph. Report.
Soper, Fred L., and National Yellow Fever Service of Brazil. "Bandeiras Usadas Pelo Servico Nacional De Febre Amarela [1-4]." Chart. 1 Image. 1946.
Soper, Fred L., and National Yellow Fever Service of Brazil. "Bandeiras Usadas Pelo Servico Nacional De Febre Amarela [5-8]." Chart. 1 Image. 1946.
Soper, Fred L., and National Yellow Fever Service of Brazil. "Organizacao Administrativa Do Servico Nacional De Febre Amarela." Chart. 1 Image. 1946.
Hackett, Lewis. Letter from Lewis Hackett to Fred L. Soper. Letter (correspondence). 1 Image. 12 October 1955.
Soper, Fred L. Letter from Fred L. Soper to Lewis Hackett. Letter (correspondence). 3 Images. 18 October 1955.