Documents / Official release
This Federal Bureau of Investigation file section, 62-HQ-83894 Section 6 (serials 246 to 301), collects FBI memoranda and correspondence from 1950 to 1952 on flying saucers. It covers green fireballs and discs seen near sensitive installations in New Mexico, Dr. Lincoln LaPaz's analysis, and the Air Force's Land-Air study known as Project Twinkle. It also holds an OSI summary, a USAF directive on reporting unconventional aircraft, a dissolving object reported by Philadelphia police, and letters from members of the public.
From the source:Release of 2026-05-08 Incident: N/A, N/A. The FBI's 62-HQ-83894 case file includes investigative records, eyewitness testimonies, and public reports concerning Unidentified Flying Objects and flying discs documented between June 1947 and July 1968. The records include high-profile incident accounts, photographic evidence from sites like Oak Ridge, TN, and technical proposals regarding potential propulsion systems. Additional topics include convention programs, researcher accounts, and extensive media coverage from the period. This file is partially posted on FBI vault with more redactions and some pages missing. Included here is the complete case file with several newly declassified pages and only minor redactions.
“Office of Special Investigations”19 pages
(3) Manner of observation; visual or electronic, from air (give speed, altitude, and type of aircraft), or surface. Any type of optical or electronic equipment used should be described. (4) Location of observer during sighting, giving exact latitude and longitude as closely as feasible, and/or reference to a known landmark. Location of object(s) with respect to observer, giving distance, direction, and altitude. (5) Identifying information on observer(s) and witnesses, estimate of reliability and experience, and any factors bearing on estimated reliability of the sighting. (6) Weather and wind conditions (teletype sequences) at time and place of sightings. (7) Any activity or condition, meteorological or otherwise, which might account for the sighting. (8) Existence of any physical evidence; fragments, photographs and the like, of the sighting. (9) Interception or identification action taken. (Such action should be taken whenever feasible, complying with existing air defense directives.) e. Reports forwarded by electrical transmission will be followed up within ten (10) days by a written report on AF Form 112. This report will contain the same information specified in subparagraph 2d above in greater detail, and where feasible will include sketches and signed attested narrative statements of observers. f. Written reports of sightings, where no previous electrically transmitted report has been submitted, will follow the same form as the written follow-up report described in subparagraph 2e above. g. Any physical evidence of the sighting will be forwarded by most expeditious means to Commanding General, Air Materiel Command, Attn: MCIS, under cover of a letter identifying the shipment with the report of sighting. Mention of the method and time of shipping of this evidence will be included in written report of the sighting. 3. It is desired that no publicity be given this reporting or analysis activity. BY COMMAND OF THE CHIEF OF STAFF: Info copies to: nfo copies to: Dir/Int, G-2, Army Dir/Naval Int. Commandant (INT) US Coast Guard Sp Asst for Research & Intel, State Director FBI Director of CIA Major General, USAF Director of Intelligence
Official release, from the pursue collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 271 pages are in the text index: search them above, or from the library's search.