Port Authority Police Memorial: WTC Lights - Photograph and summary of the lights with a link to an image of a New York Times article. - http://www.portauthoritypolicememorial.org/wtc_lights.htm
Photo Gallery: A Tribute in Light - A variety of images by Pete Burke of the "Tribute in Light" of 2002 with comments. - http://www.pbase.com/peteburke73/a_tribute_in_light/