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According to the releasing agency, this file is a collection of U.S. Government memoranda and correspondence concerning 'Project Sign,' a 1948 U.S. Air Force p…

This file is a U.S. Department of State diplomatic cable transmitted from the U.S. Embassy in Rio de Janeiro, Brazil to the Office of the Secretary of State in…

This is a U.S. Department of State diplomatic cable from the U.S. Embassy in Rio de Janeiro, Brazil to the Office of the Secretary of State in Washington, D.C.…

According to the releasing agency (U.S. Department of State, via the Department of War UAP release collection), this document is an unclassified diplomatic cab…

According to the releasing agency, this is an UNCLASSIFIED (subsequently declassified) U.S. Department of State incoming diplomatic cable from the U.S. Embassy…

This file, released by the U.S. Department of War, comprises CIA memoranda exchanged between the Assistant Director for Special Activities (AD/SA) and the Assi…

According to the releasing agency, this FBI file (FBI-UAP-D014) contains two pieces of correspondence. The first, dated September 22, 1967, relays an incident…

According to the releasing agency (U.S. Department of War), this file is a thumbnail associated with a USAF Air Intelligence Division study titled 'Analysis of…

This 67-page document is a USAF Air Intelligence Division analysis, 'Analysis of Flying Object Incidents in the United States,' Study No. 203, dated 10 Decembe…

According to the releasing agency (CIA, via the U.S. Department of War UAP release), this memorandum documents a 1955 CIA analysis of reports describing 'flyin…

This file, released by the U.S. Department of War, contains a U.S. Air Force Air Intelligence Division study titled 'Analysis of Flying Object Incidents in the…

This file is a declassified transcript, transmitted under a 22 March 1949 U.S. Atomic Energy Commission letter (Santa Fe Directed Operations), of a Secret conf…

This image is a page from DOW-UAP-D094, a USAF Air Intelligence Division study titled 'Analysis of Flying Object Incidents in the United States,' Study No. 203…