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This UNCLASSIFIED Foreign Broadcast Information Service (FBIS) report, filed from Abidjan on 25 January 1996 and later approved for release by the CIA in March…

This CIA Office of Scientific Intelligence memorandum for record, dated 18 December 1952 and signed by H. Marshall Chadwell, Assistant Director of Scientific I…

This CIA document, released via the CIA Reading Room, is an internal memorandum framed around three questions concerning UFOs, using the answers as sub-heading…

This file is a CIA internal handbook annex describing the '201 System,' the Agency's method for identifying, filing, and controlling information on persons of…

This declassified CIA Foreign Intelligence Information Report (Domestic Collection Division), dated 18 November 1976, recounts an unusual aerial observation re…

This declassified CIA report, dated 30 July 1954 and drawn from foreign newspapers published between 19 January and 15 May 1954, aggregates unidentified flying…

This CIA memorandum for record, authored by F.C. Durant, recounts a 1430-hour telephone call to Dr. John A. Wheeler at Princeton, New Jersey. Durant thanked Wh…

This four-page CIA cable, transmitted from the Guatemala City station to Director and Mexico City in April 1973, documents a station investigation (run through…

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…