The University of Pittsburgh has a fantastic Latin American collection-see Latin American Resources @ Pitt: Eduardo Lozano Latin American Collection.
Thousands of original materials related to slavery, abolition, and social justice ranging from 1490-2007.
All known legal materials on slavery in the United States and the English-speaking world. This includes every statute passed by every colony and state on slavery, every federal statute dealing with slavery, and all reported state and federal cases on slavery, as well as every English-language legal commentary on slavery published before 1920, which includes many essays and articles in obscure, hard-to-find journals in the United States and elsewhere
Essays and original documents relating to Empire Studies, race, class, imperialism, and colonialism, sourced from libraries and archives around the world.
Thousands of original materials related to slavery, abolition, and social justice ranging from 1490-2007.