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
Summary of Sightings of Unknown Aerial Phenomena, 17th District OSI (cont) Number Date Time Number of Observers *Reliability of Observers General Area of Occurrence Apparent Direction of Flight Apparent Altitude Course Horizontal to Vertical Color Train or Trail Duration of Observation Sound Shape Apparent Size Apparent Speed Manner of Disappearance **Evaluation 57 1949/28 Apr App 1745 3 Unk Tucson, Arizona NE to SE or SW Silver None 12-40 mts None Cigar or sausage shape From D-29 to a city block 300-600 mph Faded from view 58 30 Apr 2215 1 Unk Albuquerque, New Mexico E to W 59° above horizon Blue green None 2 secs 2° None Round Tenth of moon 2 seconds 2 degrees Went out (1) 59 3 May 2143 1 R Los Alamos, New Mexico S to N 10°-15° above horizon Bright white light 10 secs None Very fast up to 1,000 mph (1)(3) 60 3 May 2126 2143 2205 1 R Los Alamos, New Mexico S to N 10°-15° above horizon White 3-7 secs each time None Large - similar to size of airplane landing lights Very fast (1)(3) 61 3 May 2126 2140 1 R Los Alamos, New Mexico ESE to NWN 10°-15° above horizon 2126-white 2140-red 5 sec 1st; 2 sec 2nd None 2126-base-ball diamond lights. 2140-slightly larger than firebox lights Same speed as aircraft landing (1)(3)
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.