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.
“FBI file”9 pages
OCT 13 1950 TELETYPE SAC, KNOXVILLE 10-13-50 8-26 PM JYC DIRECTOR, FBI URGENT RADAR DETECTION OF UNIDENTIFIED OBJECTS OVER OAK RIDGE OCTOBER TWELVE, NINETEEN FIFTY, PROTECTION OF VITAL INSTALLATIONS. USAF RADAR INSTALLATION AT KNOXVILLE AT ELEVEN TWENTYFIVE PM, EST, OCTOBER TWELVE, PICKED UP INDICATIONS OF ELEVEN OBJECTS AND PERHAPS MORE TRAVELING ACROSS CONTROLLED AREA OF ATOMIC ENERGY INSTALLATION AT OAK RIDGE. ALTITUDE OF OBJECTS VARIED FROM ONE THOUSAND TO FIVE THOUSAND FEET, COURSES FROM SOUTH SOUTH EAST TO SOUTHEAST, AND DENSITY FROM READING MADE BY LIGHT AIRCRAFT TO AIRCRAFT EQUAL IN SIZE TO C FORTY SEVEN, SPEED FROM ONE HUNDRED TO ONE HUNDRED TWENTYFIVE MILES PER HOUR. FIGHTER PLANE ATTEMPTED TO INTERCEPT IN FEW MINUTES AND RADAR SCREEN REFLECTED CONTACT, BUT PLANE REPORTED NO OBJECT COULD BE SEEN EITHER VISUALLY OR ON PLANES RADAR SCREEN. AEC PATROL WAS ALERTED BUT NO OBJECTS COULD BE VISUALLY SIGHTED BY THEM OVER THE AREA OTHER THAN THE AIR FORCE INTERCEPTOR. OSI AND EASTERN AIR DEFENSE FORCES HAVE BEEN ADVISED AND ARE CHECKING INCIDENT. NO REASONABLE EXPLANATION FOR RADAR READINGS YET DEVELOPED ALTHOUGH OPERATORS ARE EXPERIENCED RELIABLE PERSONNEL AND RADAR SET IS IN PERFECT OPERATING CONDITION. BUREAU WILL BE ADVISED OF FURTHER DEVELOPMENTS. ROBEY ACK AND HOLD PLS 8-31 PM OK FBI WASH DG GAR 1950 NOV 22
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.