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This declassified NSA Technical Journal essay by cryptologist Lambros D. Callimahos discusses the scientific premise that extraterrestrial intelligence likely…

According to the releasing agencies, this is a 1971 Australian Department of Defence intelligence and scientific review of the United States Air Force Project…

This 55-page FBI file, released by the U.S. Department of War, details the Bureau's Seattle office handling of civilian and military reports of Unidentified Fl…

This declassified CIA memorandum, dated 9 January 1953, addresses the recruitment of two scientists as ad hoc consultants to the Office of Scientific Intellige…

This CIA Reading Room document is a one-page memorandum dated 9 December 1952, authored by W. E. Graham and addressed to DAD/SI, on the subject of 'FCC Monitor…

This CIA information report, dated 4 February 1953, aggregates unevaluated accounts drawn from French daily and thrice-weekly newspapers published between 3 Ju…

According to the U.S. Department of War release (attributed on the hosting page to the Department of State), this two-page memorandum dated July 28, 1952 relat…

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According to the releasing agency (U.S. Department of War, sourcing the CIA), this file contains 1952–1953 correspondence and reports from the Scientific Advis…

This CIA information report, sourced from the Norwegian four-times-weekly newspaper Harstad Tidende (published 20 September 1952), relays an unevaluated accoun…

This file is Project Blue Book Special Report No. 14, dated 5 May 1955 and produced by the Air Technical Intelligence Center at Wright-Patterson Air Force Base…

This document is Serial 403 of the FBI Headquarters case file 62-HQ-83894, released by the U.S. Department of War/FBI. According to the releasing agency, the o…

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 memorandum for record, dated 3 December 1952, recounts the author's meetings the previous morning with Dr. Julius A. Stratton (Executive Vice Presiden…

Office Memorandum * UNITED STATES GOVERNMENT TO ‘Assistant Director, Sclentific Intelligenca = DATE: April 1958

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 declassified CIA document, hosted in the CIA Reading Room (DOC_0000015338), is a compilation of 1952 memoranda, draft National Security Council directives…

This file compiles the records of the CIA Office of Scientific Intelligence's Scientific Advisory Panel on Unidentified Flying Objects, chaired by H. P. Robert…

This two-page CIA record, released via the CIA Reading Room, concerns photographs of an unidentified flying object captured by Ralph L. Mayher on 16mm movie fi…

This CIA report reproduces translated excerpts from Greek, French, and Persian newspapers published in Athens, Brazzaville, and Tehran between 1 March and 20 M…

This CIA report, dated 2 September 1952, aggregates unevaluated eyewitness accounts of unidentified flying objects published in French daily newspapers from Da…

This CIA-released document is a letter dated 13 May 1995 from Dr. Edwin C. May, Director of the Cognitive Sciences Laboratory at Science Applications Internati…

This CIA document, released through the agency's electronic reading room, is an early-1950s internal memorandum examining the national security dimensions of u…

This three-page document is the minutes of a meeting held at 0835 on 21 August 1952 in Mr. Steele's office, with a quorum including Mr. Sullivan (Chairman), Mr…