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
TO DIRECTOR, FBI (62-83894) DATE: March 21, 1952 FROM : SAC, CHICAGO (100-18999) SUBJECT: FLYING DISCS KARL-NYQUIST, INFORMANT Mr. KARL NYQUIST, an artist living at 2417 North Burling Street, Chicago, Illinois (telephone LI-9-1479) advised SA MYRON H. TRETER on March 11, 1952 that he saw a flying disc at 9:00 AM on March 6, 1952. NYQUIST stated that he was looking out of a window at his home which window faces south, when he saw a flying disc at approximately 7,000 feet above Fullerton Avenue. The angle of elevation of the disc above the horizon was about 45 degrees. The disc came out of a cloud in the east, stopped and hung motionless in mid-air for a split second, then flew due south at great speed. He described the disc as approximately six feet in diameter, circular, white in color with a bluish tinge. The disc, he said, appeared to have been constructed out of a metal similar to aluminum. He also stated that he saw no exhaust, lights, or heard no sound connected with its movements. He noted nothing on it as to how it could maintain its even flight and believed it to have been radio controlled. He said it disappeared out of sight in approximately three seconds, estimating the speed at 600-700 miles per hour or more. He said it went so fast it appeared to flutter. When the disc disappeared from sight it was about the size of a golf ball on the southern horizon. NYQUIST made a sketch of the disc and the sketch and the above information were furnished to the local office of the Office of Special Investigations. MHT:BJB DECLASSIFIED Authority: RECORDED - 79 NND 90986 INDEXED - 79 EX-125
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.