24x 9/11 Memorial Postcard The National September 11 Memorial and Museum, located at the World Trade Center site, will remember and honor the nearly three thousand people who were killed in the terrorist attacks of September 11, 2001 and February 26, 1993, document the events of 9/11, and educate for a better future. Photographer - Richard Berenholtz www.national911memorial.org Postcard size 4 x 6