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
## CONFIDENTIAL 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 159 1949/13 Dec 2005 3 R Alamogordo, New Mexico Stationary then began to move downward slowly and to right 5,000' White amber red green None 9 mts None Circular 1-1 1/2 times size of average st. light at a distance of 8 miles Object took on brilliant green color, picked up speed and faded from view 160 1950/6 Jan 2230 7 R Alamogordo, New Mexico E to W Up & down and horizontal White changed to green & red None 45 mts None Star like Slightly larger than planet Venus Moved app. 15° to 20° from E to W during 45 mins it was observed Stopped observation 161 7 Jan 2215 2 Unk Corona, New Mexico From SW to SE Descending Yellowish white orange blue green Yes 10 secs None Round ball shape Same as cup 6" in diameter at arm's length Compared w/fast jet fighter Disappeared behind mt. range 162 9 Jan 2226 1 R Los Alamos, New Mexico 80°-40° above horizon Horizontal Incandescent green Yes 2 secs None Oval with trail Disappeared behind trees
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.