After unauthorized photography at Ground Zero is banned by New York City authorities on September 25, 2001 (see September 25, 2001), independent or press-affiliated photographers find it difficult to enter the secured perimeter. Only one professional photographer, Gary M. Suson, obtains official permission to work at the site. He will publish his work in the book Requiem: Images of Ground Zero. [Suson, 2002; New York Times, 5/28/2002] Photographs taken by New York Police officers will be gathered in the book Above Hallowed Ground: A Photographic Record of September 11, 2001. [Department, 2002] Joel Meyerowitz, a renowned independent photographer, is unable to obtain permission but manages to insert himself into “the forbidden city”. Wily and persistent, Meyerowitz makes friends among some police officers, acquires a hard hat and some gloves to look inconspicuous, and even forges a work permit on his home computer, and succeeds in photographing Ground Zero over a period of nine months. He will later publish this invaluable record in the 2006 book Aftermath: World Trade Center Archive. [Meyerowitz, 2006; Observer, 8/27/2006; New York Times, 9/3/2006]