http://memory.loc.gov/ammem/hhquery.html Enter 'Lighthouse' in the search box
http://aerialpics.com/I/shipslights.html
http://www.graniteisland.com/index.shtml
http://www.lighthouseantiques.net/
http://www.terrypepper.com/lights/index.htm
http://www.lhdigest.com/database/searchdatabase.cfm
http://www.crisppointlight.org/
http://www.shipwreckmuseum.com/
http://lighthousegetaway.com/lights/fresnel.html
http://acept.la.asu.edu/PiN/rdg/fresnel/fresnel.shtml
http://www.pbs.org/legendarylighthouses/html/photo.html
http://www.oddinns.com/index.php/pages/lighthousebedandbreakfast.html
http://www.spacekdet.com/lens/
http://www.spacekdet.com/keeper/