Important subjects in this collection are Argentina - Instituto de Bacteriologia, Buenos Aires; Argentina - nursing school, Rosario; Argentina - political situation, especially as it affected universities; Chile - Quinta Normal Health Center; disease control - malaria, especially in the Lurin Valley, Peru; disease control - yellow fever, especially in Bolivia and Peru; Ecuador - National Institute of Hygiene, Guayaquil; epidemiology - general; epidemiology - malaria; epidemiology - yellow fever; insecticides - Paris green, DDT and others; Peru - Ica Health Center; public health - administration; public health - nursing; Russia - general commentary after two trips; and South America - life and customs, general commentary.