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 (contd) 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 Lanner of Disappearance 51 1949/12 Apr 1930 1 Unk Albuquerque, New Mexico SE to NW 20° above horizon White None 8 secs None Round 1/8 size of moon 15° in 8 secs Extinguished (1) 52 15 Apr 1630 1 Unk El Paso, Texas Straight up About 30° Grayish Yes 15 mts None Thin smoke trail Very thin Dissipated (2) 18 Apr 0148 2 R Flagstaff & Williams, Arizona NW App 12,000' to one. 75 - 100 miles to other observer Greenish blue 1 - 2 secs None Ball like 100 watt light bulb Disappeared behind obstacle 54 22 Apr 0905 1 Unk Cliff, New Mexico W to E 20° dropping slowly Aluminum None 2 mts None Round, flat thin, disc-shape Over 15' in diameter Disappeared behind mountains (2) 55 24 Apr 1053 5 VR White Sands, New Mexico N 25-29° White light yellow 60 secs None Ellipsoid Tremendous rate of speed Disappeared due to distance (2) 56 25 Apr 0630 2 Unk Springer, New Mexico 2 groups going W 2 groups going E Well above 30,000' Silvery white None 4 grps totaling about 20 sec Yes Round Very small Very fast well above speed of sound Disappeared from view (2)
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.