Navassa Island Lighthouse - Year established, data on existing tower and other information provided by the National Park Service. www.cr.nps.gov/maritime/light/navassa.htm
Puerto Rico Light Stations - Photos, data and information provided by the U.S. Coast Guard. www.uscg.mil/hq/g-cp/history/WEBLIGHTHOUSES/LHPR.html
Puerto Rico Lighthouses - Historic information and data provided by the National Park Service. www.cr.nps.gov/maritime/light/pr.htm
