Centro is a research institute that is dedicated to the study and interpretation of the Puerto Rican experience in the United States and that produces and disseminates relevant interdisciplinary research. Centro also collects, preserves, and provides access to library resources documenting Puerto Rican history and culture.

This Web site, based on the publication Hispanic Americans in Congress, contains biographical profiles of former Hispanic Members of Congress, links to information about current Hispanic Members, essays on the institutional and national events that shaped successive generations of Hispanic Members of Congress, and images of each individual Member, including rare photos.

The fundamental purpose of the NPS is to conserve the scenery and the natural and historic objects and the wild life therein and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations. The NPS provides highlights, statistics, and a list of national parks for Puerto Rico.

Official site of the Commonwealth of Puerto Rico in Spanish and English. This portal provides resources and services of the Government of Puerto Rico.

Profile America's Stats for Stories provides links to timely story ideas highlighting the Census Bureau's newsworthy statistics that relate to Puerto Rico.