The process by which Puerto Rico became a modern nation is a complex one, and visitors interested in learning more about this subject would do well to examine this website created by the American Memory Project at the Library of Congress. As with many collections in this series, this particular archive contains historically important writings from a variety of notable personages, such as a clutch of well-known Puerto Rican political activists and historians from the early 19th century to 1929. Visitors who might be a less familiar with the contours and general historical development of Puerto Rico would do well to read the extensive essay offered here by Marisabel Bras, who is a senior analyst at the Department of Defense. The archive also contains a nice selection of historic maps of the general Caribbean region and Puerto Rico. Finally, visitors can also search the materials here by title, author, or subject.