The Latin American mss. Peru, 1535-1929, consist of over 6500 documents which trace the historical, economic and social development of what is presently known as Peru, with lesser coverage of Argentina, Bolivia, Chile and Ecuador.
The Sarmiento mss., 1862–1949, consists of letters and ephemera of Argentinean activist, politician, and writer Domingo Faustino Sarmiento, 1811-1888, and his family.