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 CSI (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 174 1950/24 Feb 1400 1 R Albuquerque, New Mexico E by SE About 20° above horizon Bright white None 20-30 secs None Round Compared w/size of weather balloon as it disappeared in distance Very slow Faded out of sight 175*** 24 Feb 1930 1 R Datal, New Mexico NV White changing to red & green Yes 2 hrs 30 mts None Round 10 per 2 mts. Disappeared (1)(2) 176 24 Feb 1345 1 Unk Los Alamos, New Mexico E then turned W 25,000-30,000' Straight up White, kept flashing like mirror in sun None 20 mts None Very fast Wont straight up out of sight (2) 177 24 Feb 1340 1 Unk Los Alamos, New Mexico E to W to E then st. up 30,000' Straight up Silvery white None 20 mts None Wont straight up out of sight (2) 178 24 Feb 1315 1 R Los Alamos, New Mexico Erratic generally NE 20,000-30,000' Silvery None 15 mts None Saucer shaped 100' across if at 20,000-30,000' As fast or faster than sound Disappeared (2) ***Seo attached photograph.
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.