The Yucatecan Letters consist of manuscript correspondence (960 letters) received by the Captaincy General of Yucatán after 1778, and after independence, by the Commandant General of Arms for the State of Yucatán. The majority, destined for Mérida, come from Campeche, Sisal, and Bacalar, with a few from Veracruz, Habana, Madrid, Cádiz, and from within Mérida. The writers are most often the ranking officers at the various outposts under the command of the Captain General. More than 230 letters date from the year 1797, and over 400 from between 1810 and 1815, the period connected with the first movement for Mexican independence. Topically, the manuscripts may be grouped into three broad areas: economic, military, and legal affairs.
Contains over 1600 pamphlets, grey literature and ephemera from twenty-three countries and colonial dependencies in Central America and the Caribbean. The scope of the collection is broad, ranging tiny Anguilla, represented by three pamphlets, to Cuba, represented by 320 pamphlets. In addition to documenting the politics and economics of the region, the collection includes significant material on the labor movement, international relations, and agriculture, as well as human rights, education, the arts, religion, and the role of women.
Contains over 2,000 pamphlets, grey literature and ephemera from eight countries. The main focus is on Brazil, represented by 664 pamphlets. Other large sections are Venezuela (515 pamphlets), Peru, (258 pamphlets), and Bolivia (250 pamphlets). Many pamphlets in Part 3 were printed in around 1960. They cover a wide variety of subjects, such as history, coffee, guerilla warfare, human rights, socialism, commerce, public administration, economic development, immigration, indigenous peoples, and feminism.