Source: Cryptome - 13 March 2010
"These photos show World Trade Center 7 (WTC 7), New York, NY, before and after its collapse on 11 September 2001.
From the National Institute of Standards and Technology (NIST) FOIA Release of 3,160 Electronic Records of the WTC Collapse Investigation in February 2010. Included is a letter from NIST noting copyright issues of the photographs.
Also included is a letter dated 26 January 2010 from NIST to a requester denying access to certain WTC 7 investigative material on the basis that release "might jeopardize public safety."
Several NIST reports on the collapse of WTC 7 and the Twin Towers: (link in comments)