National Archives holdings of declassified U.S. government UFO records

The National Archives and Records Administration in Washington, D.C. provides public access to declassified U.S. Air Force files related to Project Blue Book and other federal UFO records. Researchers can consult archival documents online and in-person that include reports and correspondence about the 1952 Washington, D.C. sightings. The Archives' holdings have been used in historical and journalistic research on U.S. government investigations of unidentified aerial phenomena.