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Official reports, hearing transcripts, case files and releases: the paper behind the cases. 2,872 documents, 2,610 mirrored with their text, 53,529 pages indexed, so a search reads inside them and lands on the page.
New in the library The PURSUE files The Department of War's UAP release, mirrored in full: the videos, recordings and images, each beside its case file.Documents2,872 records · page 2
This declassified transcript, released by the Office of the Under Secretary of War, records a March 1952 presentation by Captain Edward J. Ruppelt on the U.S. Air Force's reorganized UFO investigation. Ruppelt says that of about 800 cases reviewed, roughly 20 percent were good reports from reliable observers that stayed unexplained. He notes clusters of reports near Los Alamos, Albuquerque and Oak Ridge and describes the Lubbock lights and their photographs in detail. He also covers reporting directives, classification and the upcoming Life magazine article.
This 1952 file of U.S. Air Force intelligence correspondence on flying objects comes from the Directorate of Intelligence at Headquarters USAF. It records the return to the Coast Guard of a negative of objects photographed at Salem Air Station on 16 July 1952, and requests to Naval Intelligence to analyze the Tremonton film by Delbert Newhouse and the Great Falls film by Nicholas Mariana. It also holds Strategic Air Command report transmittals, letters from members of the public, and an Okinawa object said to have fallen into the sea.
This Federal Bureau of Investigation Seattle field office file (100-18945) gathers flying saucer material from 1952 to 1960. It holds newspaper clippings, citizen complaint forms and agent memoranda about sightings over Pasco, Kennewick, Seattle, Richland and the Hanford reservation, Spokane and other Washington locations. The file records 1952 agreements with military intelligence on passing reports to OSI and the Air Force. One Hanford sighting from 1953 was attributed to a meteorological balloon. The FBI itself carried out no investigations.
This Central Intelligence Agency information report, distributed 11 February 1952, is a reinterrogation of an informant from an earlier report (SO-49149x). It describes three light phenomena seen almost every night from May to September 1947 from a camp at Pakhta Aral, about 50 km southwest of Tashkent, Uzbek SSR. Each began as a dark red ball of fire that climbed a long trajectory while changing color, with no smoke, noise or detonation noticed. A field comment says the trajectory estimates should be treated with reserve.
This Central Intelligence Agency information report, distributed on 11 February 1952, is unevaluated and supplements an earlier report through a second interrogation of the same informant. The informant describes light phenomena seen almost every night from May to September 1947 from a POW camp about 50 km southwest of Tashkent in the Uzbek SSR. Each phenomenon was a dark red ball of fire that rose on a long trajectory, changed color, and made no noise. A field comment advises treating the trajectory estimates with reserve.
This audio file records a March 1952 presentation by Captain Edward J. Ruppelt, outlining the U.S. Air Force’s reorganized investigation into unidentified flying objects (UFOs). The presentation previews prospective technical methodologies, such as diffraction-grating photography and radar-scope synchronization, that were subsequently incorporated into Project Blue Book, a U.S. Air Force program active from 1952 to 1969 that investigated the nature and origin of UFOs. Ruppelt explains that out of approximately 800 historical cases reviewed by the Air Force, approximately 20% remained unexplained after technical analysis. These unresolved reports were sourced from credible military personnel, commercial pilots, and other qualified technical observers. He highlights geographic report concentrations around sensitive national security and nuclear weapons installations (including Los Alamos, Albuquerque, and Oak Ridge National Laboratories) and notes recurring anomalous characteristics, including silent high-speed flight and radar detections indicating unconfirmed air speeds between 1,000 and 3,500 miles per hour. Emphasizing that the Air Force found no conclusive evidence regarding the nature or origin of the phenomena, Ruppelt underscores the national security need for a systematic physical data collection effort to better evaluate these sightings.
This declassified transcript, released by the Office of the Under Secretary of War, records a March 1952 presentation by Captain Edward J. Ruppelt on the Air Force's reorganized UFO investigation. Ruppelt reports that about 20% of roughly 800 cases remain unexplained and notes clusters of reports near Los Alamos, Albuquerque and Oak Ridge. He discusses the Lubbock lights photographs, the Phoenix 1947 photograph and the Mantell case. He concludes that the Air Force has no firm evidence about what the objects are.
This CIA memorandum from April 1952 was signed by Philip G. Strong, Deputy Assistant Director. It was sent to Major Carl R. Hart at Headquarters United States Air Force and passes on a letter from Thomas B. Scott, Jr. of Lake View, South Carolina, together with the Agency's reply. Scott had described signaling an object in the sky on 2 April 1952. The reply says the Agency is interested but that the Air Force is responsible for identifying such objects, so the letter was forwarded to it.
This CIA file on flying saucers includes a memorandum from Director Walter B. Smith to the Director of the Psychological Strategy Board. Smith says unidentified flying objects may matter for psychological warfare as well as intelligence and operations. The file also holds an Office of Scientific Intelligence study, draft NSC and Secretary of Defense papers proposing a centrally run research program, a briefing on the Air Force's small ATIC section under Captain Ruppelt, and a Project Blue Book paper on weather and research balloons.
This Central Intelligence Agency file from 1952 contains several related papers. A July 1952 memorandum from the Acting Assistant Director for Scientific Intelligence notes recent radar and visual sightings and says a special study group is under way. A later memo from H. Marshall Chadwell says objects seen at high altitude near U.S. defense installations are not attributable to natural phenomena. The file also includes a draft memo to the National Security Council and a draft NSC directive making identification of unidentified flying objects a priority.
This 1952 Central Intelligence Agency file brings together papers on unidentified flying objects. A memorandum to the Director of the Psychological Strategy Board says the subject may matter for psychological warfare, intelligence and operations. A study by the Office of Scientific Intelligence describes the small Air Force section at Wright Field led by Captain E. J. Ruppelt, criticizes its case-by-case analysis, and recommends a centrally coordinated research program. The file also contains a Project Blue Book paper on identifying weather and research balloons.
These Central Intelligence Agency minutes cover a P&E Division branch chiefs' meeting on 11 August 1952. Mr. Sullivan announced a new "Flying Saucers" project to keep a file, build outside contacts and bring the Division up to date so it could form an opinion when needed. The minutes say ATIC collects flying saucer information for CIA. Branch representatives were named, and Ray Gordon was made Project Officer, tasked with gathering ATIC reports and past findings in meteorology, radar and other sciences.
This archival footage is a digitization of a 16mm print of Kodachrome color motion-picture film shot on a handheld Bell & Howell Auto Master camera near Tremonton, Utah, on July 2, 1952. U.S. Navy Chief Warrant Officer Delbert C. Newhouse reported observing and filming a group of bright airborne objects and shortly thereafter submitted the footage to the U.S. Air Force. The film later became one of the visual cases reviewed by Project Blue Book, the 1952–1969 U.S. Air Force program that investigated the nature and origin of unidentified flying objects (UFOs). The film’s limited detail and lack of fixed reference points prevented a conclusive resolution. From the 55-second mark onward, the film transitions to unrelated footage appearing to show a demonstration of sewing equipment. The presence of unrelated sewing-equipment footage suggests that the surviving footage may be a composite or reused print, though the available record does not establish how or when the materials came to be combined. As documented in records submitted with the film, contained in this collection under the title DOW-UAP-D102, the footage originally was paired with mountain scenery from Idaho, which is not preserved in this digitization.
This U.S. Air Force Project Blue Book file compiles 1952 and 1953 messages, memos and reports on the movie film Navy Chief Photographer Delbert C. Newhouse shot on 2 July 1952 near Tremonton, Utah. It records interviews with Newhouse's family, requests about the film, and Navy and General Mills balloon experts judging that the objects closely resembled pillow balloons. It also covers internal debate about releasing the film to the press. Unrelated reports from Phoenix, Lexington and Highland Park sightings are included too.
This Project Blue Book photo file, covering Files 1377 and 1415 and dated July 7, 1952, deals with two photos taken by CPO Delbert C. Newhouse. He took them at 1110 MST on 2 July 1952, about 7 miles north of Tremonton, Utah, after his wife noticed a group of objects milling about in rough formation. The file notes there were no reference points for speed, distance or size. It gives the explanation as pillow balloons or birds and includes a General Mills Research Laboratories photo of 2 by 2 foot pillow balloons.
This Central Intelligence Agency report (No. 00-W-23759), distributed 27 August 1952, collects unevaluated translations of Spanish and French newspaper items published in Tangier and Algiers between 22 May and 16 June 1952. It describes a rocket-shaped, smoke-trailing object over Barcelona, a green-lit object over Sousse, Tunisia, and sightings over Meknes, Taourirt and Casablanca in French Morocco. At Meknes, a witness said the object was much faster than nearby T-33 planes. The report draws no conclusions.
This informal CIA memo, dated 5 July 1952 and signed by Edward Tauss, Acting Chief of the Weapons and Equipment Division, gives an overall evaluation of "flying saucer" reports. It says that of 1,000 to 2,000 reports received by ATIC, most were phony, known U.S. equipment or natural phenomena, and fewer than 100 credible reports remained unexplained. The memo recommends that CIA surveillance of the subject continue while CIA interest is kept from the press and public. It also notes a briefing at Wright-Patterson Air Force Base arranged for 8 August 1952.
This Central Intelligence Agency memo, dated 5 July 1952, reports on a file search for mentions of flying saucers in the Soviet and Satellite press. It says the search found no factual evidence of such mentions in the past two years. It cites a 10 June 1951 Moscow broadcast and a Budapest Szabad Nep article, both calling flying saucer stories American attempts to fan war hysteria. It notes that field stations were asked to watch for further Iron Curtain mentions.
This Central Intelligence Agency item, dated 5 July 1952 and approved for release in March 1978, relays a press item from Bonn about an article by Dr. Waldemar Beck in the German magazine Der Flieger. The article claims a crewless flying saucer 47 meters in diameter crashed on Spitsbergen and was studied by Norwegian and German rocket experts. It reports a plutonium-cored radio piloting transmitter, an unknown steel alloy, 46 jets and Russian inscriptions on the instruments.
This Central Intelligence Agency information report, numbered 00-W-23682 and published 9 July 1952, reproduces a Berlin press account about a claimed landing in the Soviet Zone of Germany. It reports that Oscar Linke, the former mayor of Gleimershausen, and his 11-year-old daughter Gabriella gave sworn testimony that they saw a disc about 15 meters across near Hasselbach. According to the testimony, two men in shiny metallic clothing boarded the object before it rose and flew off toward Stockheim. The report is marked as unevaluated information.
This Central Intelligence Agency information report, numbered 00-W-23602 and distributed 16 August 1952, translates a 29 March 1952 article by Fritz Sitte from the German-language newspaper Die Presse. The article says two fiery disks were seen over uranium mines in the Elisabethville district of the southern Belgian Congo. It also says Commander Pierre pursued them in a fighter for 15 minutes and estimated their speed at about 1,500 kilometers per hour. A speculative sketch of the saucers' construction is appended.
This U.S. Department of State file contains two memoranda dated July 28, 1952. A cover note tells Mr. Armstrong that Paul Nitze had asked for the Air Force view on flying saucers. The attached memorandum records General Samford's answer that the subject remained "a complete enigma" and that "credible observers are reporting the incredible." Samford linked the rise in reports to better radar and pilot reporting and to publicity. He also indicated that the saucers being man-made was a remote possibility.
This Central Intelligence Agency memorandum was prepared for the Deputy Director/Intelligence and dated 23 July 1952. It comes from the Acting Assistant Director for Scientific Intelligence. It reports that many visual sightings of unidentified objects have come in over the past several weeks. The office has reviewed such reports for three years, and a special study group has now been formed to review the subject. A report is expected about 25 August. The copy is partly illegible and was approved for release in 2010.
This Central Intelligence Agency memorandum to the Director of Central Intelligence, from H. Marshall Chadwell, Assistant Director for Scientific Intelligence, was prepared in September 1952. It reviews the Air Force study of flying saucer reports at the Air Technical Intelligence Center, which had received about 1,500 official reports since 1947. It finds that the sightings carry national security implications, both psychological and for air defense. It recommends action by the National Security Council, new research and a public information policy that would minimize the risk of panic.
This CIA memorandum from the Acting Chief of the Weapons and Equipment Division to the Deputy Assistant Director/SI, dated August 1952, gives an overall evaluation of flying saucer reports. It says most of the 1000 to 2000 reports received by ATIC are hoaxes, known U.S. equipment or natural phenomena, and fewer than 100 credible reports remain unexplained. It recommends that CIA surveillance continue without press or public awareness and notes that a briefing at ATIC was set for 8 August 1952.
This is a Central Intelligence Agency information report on flying saucers in the Netherlands. It carries report number 00-B-55478, is marked as unevaluated information and was distributed on 2 September 1952. The surviving text says that on 24 July, at about 6:30, a woman and her four children saw a large formation of flying saucers over Arnhem. The objects came from the north in a V formation, stayed in view for several minutes and then suddenly disappeared to the south.
This Central Intelligence Agency information report, distributed on 2 September 1952 and marked as unevaluated, translates French-language newspaper items from Dakar and Casablanca published 12 to 18 July 1952. It collects eyewitness reports of flying saucers and luminous objects. They include a flame-emitting object over Dakar on 3 July and sightings in Morocco between 12 and 14 July at Had Kourt, Fedala, Ifrane, Chichaoua, Louis Gentil and near Casablanca. A blue ovoid object was also reported rising from the ground in the Daiet Aoua region.
This Central Intelligence Agency information report (No. OO-W-24108), distributed 27 September 1952, summarizes Spanish and French newspaper accounts published between April and August 1952. It covers four glowing spheres over Almansa and a red object over Andujar in Spain. It describes a cargo ship master's sighting of an orange light off Port Gentil, Gabon, where no planes were aloft, and a string of saucer reports across Oran Department, Algeria. The material is marked as unevaluated.
These are the Central Intelligence Agency minutes of a Branch Chief's meeting held on 11 August 1952. The chairman, Mr. Sullivan, announced that the P&E Division would start a project on "Flying Saucers". Its purpose would be to keep a file, set up outside contacts and build current knowledge so the Division could form an opinion when asked. Branch representatives and a Project Officer were named. The Project Officer was to get reports from ATIC, which keeps worldwide records and answers requests.
This Central Intelligence Agency briefing from 22 August 1952 presents the Office of Scientific Intelligence review of the Air Force flying saucer investigation, with attachments dated 14 and 19 August. It traces sightings from 1947 and explains most as balloons, aircraft, astronomical bodies or atmospheric effects. About 20% remain unexplained. The briefing rules out US or Soviet weapons and space ships. Its main concerns are psychological warfare, false alerts to air defense, and civilian saucer groups.
This Central Intelligence Agency memo, dated 22 August 1952 and approved for release on 24 January 1972, reports on searches for mentions of flying saucers in the Soviet and satellite press. Files turned up no factual press mentions in the past two years. They did turn up a 10 June 1951 Moscow broadcast and an August 1952 Budapest newspaper article, and both called saucer reports an American attempt to fan war hysteria. FAID was asked to have its field stations report any further Iron Curtain mentions.
This Central Intelligence Agency record, dated 23 August 1952, reproduces a Berlin news report about a flying saucer said to have landed in East Germany. Oscar Linke, a former mayor of Gleimershausen who had fled the Soviet Zone, and his daughter Gabriella swore before a judge that they saw two men in shiny clothing beside a disc 13 to 15 meters wide near Hasselbach. The object rose, rotated and flew off toward Stockheim, and it left a freshly dug circular hole behind.
This CIA Information from Foreign Documents or Radio Broadcasts report, No. 00-W-23682, relays a Greek-language press item published 9 July 1952. It gives the sworn testimony of Oscar Linke, a former mayor of Gleimershausen who had escaped to West Berlin, and his daughter Gabriella. They described two men in shiny metallic clothing beside a frying pan shaped object 13 to 15 meters wide near Hasselbach. The object rose, rotated and flew off toward Stockheim, leaving a freshly dug hole. The report is marked unevaluated information.
This Central Intelligence Agency report, No. OO-W-23759, was distributed on 27 August 1952. It is unevaluated information that translates Spanish and Algerian newspaper accounts of flying objects seen over Spain and North Africa in May and June 1952. The accounts describe a rocket-shaped object leaving a smoke trail over Barcelona and a green-lit object over Sousse, Tunisia. They also describe sightings over Meknes, Taourirt and Casablanca in Morocco. The report makes no evaluation of the sightings.
This Central Intelligence Agency memorandum to the Director of Central Intelligence, prepared by the Office of Scientific Intelligence in September 1952, asks whether flying saucer reports have national security implications. It reports that the Air Force's small ATIC group had received about 1500 official reports since 1947 and studies them only case by case. It identifies psychological warfare and air defense false alarm risks, notes silence in the Soviet press, and recommends National Security Council involvement, further research and a public information policy.
This is a Central Intelligence Agency information report dated 2 September 1952 and released with the title "(Deleted) Flying Saucers." The surviving text quotes an account of a large formation of "Flying Saucers" seen above Arnhem on 24 July at about 6:30. A woman, whose name is withheld, and her four children watched the objects come from the North in a V formation. They saw them for several minutes before the objects suddenly disappeared to the South.
This Central Intelligence Agency memorandum for record, signed by Ralph L. Clark and dated 2 September 1952, concerns the flying saucer problem. It records an agreement between CIA intelligence officials to bring responsible people in the community together to work out a program of research and intelligence. That program would then go to the DCI and possibly the Secretary of Defense and National Security Council. A meeting with Dr. Walter G. Whitman of the RDB and Gen. John A. Sanford of the USAF was proposed for 20 or 21 October.
This Central Intelligence Agency document, dated 2 September 1952, compiles French-language press reports of unidentified flying objects over French West Africa and Morocco in July 1952. It cites an eyewitness who described a flat, tapered object emitting bluish and reddish flames over Dakar on 3 July. It also lists sightings of saucers, disks and luminous objects at Fedala, Ifrane, Had Kourt, Chichaoua, Louis Gentil, near Casablanca and in the Daiet Aoua region. The document summarizes these accounts and offers no analysis or conclusion.
This Central Intelligence Agency file contains memoranda to the Director of Central Intelligence from H. Marshall Chadwell, Assistant Director of the Office of Scientific Intelligence, dated October 1952. They find that the Air Force's Air Technical Intelligence Center explains flying saucer reports one case at a time, which is not enough to resolve the problem as a whole. The memos warn of two national security dangers, mass psychological panic and air defense vulnerability, and recommend that the National Security Council be briefed and that research begin.
This Central Intelligence Agency foreign press report, distributed 27 September 1952, compiles unevaluated newspaper accounts of unconventional aircraft seen in Spain, Algeria and French Equatorial Africa in 1952. It describes four glowing spheres over Almansa, a red saucer over Andujar, and a luminous object that a cargo ship's master and first mate watched maneuver over Port Gentil, Gabon. Most items describe a wave of saucer sightings across Oran Department in July 1952, reported by police, a priest and a cadi.
This Central Intelligence Agency report (No. 00-W-24639), distributed 24 November 1952, compiles unevaluated translations of French and Spanish newspaper items from July to October 1952. It covers sightings of luminous disks and other unidentified objects over French Morocco, Algeria, Tangier, Spain, Mallorca, Durban in South Africa and Abidjan. Most items describe the object seen across Morocco on 21 September 1952, including a close pass reported by a tourist pilot named Creze. One newspaper suggested that object was probably a meteor.
This declassified Central Intelligence Agency file includes an Office of Scientific Intelligence memorandum to the Director of Central Intelligence dated 2 October 1952 and an attached memo on flying saucers. H. Marshall Chadwell of OSI found that the Air Force's ATIC was the only group studying the subject, and only case by case. Chadwell warned of two national security risks, mass panic and confusion in air defense. He recommended that the National Security Council start research and adopt a public information policy.
This Central Intelligence Agency report, No. 00-W-24549, was distributed on 13 November 1952. It translates an item from the Norwegian newspaper Harstad Tidende, published 20 September 1952, and is marked as unevaluated information. According to the item, on 18 September three forestry workers just outside Kirkenes watched a flat, round object 15 to 20 meters across hover motionless at about 500 meters before it flew off northwest at great speed. The workers appear to have been the only witnesses.
This Central Intelligence Agency memorandum for record, dated 14 October 1952 and signed by Ralph L. Clark, covers an informal discussion among DD/I, AD/IC and the Acting AD/SI about the flying saucer problem. They agreed that the responsible people in the intelligence community should meet to work out a research and intelligence program. The finished program could then go to the DCI, and possibly to the Secretary of Defense and the National Security Council. The memo sets a meeting for 20 or 21 October with Dr. Walter G. Whitman, General John A. Samford and others.
This Central Intelligence Agency memorandum, dated 2 November 1952, reports an interview with Irving Weston of the FCC's Field Engineering and Monitoring Division. Weston said the Commission had no knowledge of unexplained radio signals that might be connected with flying saucers. The memo describes the FCC's 12 full-time and 6 part-time monitoring stations, the limits of its VHF monitoring and its file of reported intercepts. It concludes that persistent signals below 30 mc/s would likely draw attention.
This CIA Office of Scientific Intelligence memorandum for record, dated 3 December 1952, describes meetings at MIT with Julius Stratton, Max Millikan, Lloyd Berkner and Jerrold Zacharias. The author briefed them on recent sightings and discussed where a scientific review of flying saucers could be based, including Project LINCOLN, Princeton or Cal Tech. The memo concludes that full backing from the DCI will probably be needed to secure Air Force cooperation for such a review.
This Central Intelligence Agency memorandum from H. Marshall Chadwell, Assistant Director for Scientific Intelligence, to the Director of Central Intelligence is dated 1952 and summarizes the state of the investigation into unidentified flying objects. It lists recent incidents, among them movies of ten objects taken near Tremonton, Utah on 2 July 1952, a brilliant light seen off the coast of Maine, and an alleged ground contact in Florida. It also reports that work is underway with Dr. H. P. Robertson to set up a panel of top scientists to review the subject.
This Central Intelligence Agency foreign press report, distributed on 13 November 1952, translates an article from a Norwegian newspaper published in Harstad on 20 September 1952. According to the article, three forestry workers just outside Kirkenes saw a flat, round object on 18 September at 1400 hours. It hovered motionless at about 500 meters, was an estimated 15 to 20 meters across and then flew off northwest at great speed. Only these three workers appear to have seen it.
This Central Intelligence Agency compilation, dated 24 November 1952, gathers translated press reports of unidentified flying objects seen over Spain and Africa from July to October 1952. Sources include Moroccan, Algerian, Spanish and Ivory Coast newspapers. It covers disks over Marrakech, a theodolite sighting by two meteorologists in Durban, and a widely observed object on 21 September 1952 over Casablanca, Tangier, Fes and Rabat, including a close view by a pilot. One Rabat paper suggested that object was a meteor.
This Central Intelligence Agency file dated 2 December 1952 holds a memorandum from H. Marshall Chadwell, Assistant Director for Scientific Intelligence, to the Director of Central Intelligence. It says that sightings of unexplained high-speed objects at great altitudes near major U.S. defense installations need immediate attention. Chadwell proposes a consulting group of qualified scientists. The file also holds a draft memorandum to the National Security Council and a draft directive. Together they would have the Director of Central Intelligence run a priority program of intelligence and research to identify unidentified flying objects.