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.
“Cooper”3 pages
Read from the scan by GLM-OCR; expect the odd misread word.
# RECORDE-29 62-83894-R92 EX-129 Date: August 13, 1952 To: Director of Special Investigations The Inspector General Department of the Air Force The Pentagon Washington 25, D. C. From: John Edgar Hoover, Director Federal Bureau of Investigation Subject: ANONYMOUS COMMUNICATION WRITTEN IN THE GERMAN LANGUAGE, RECEIVED BY THE "CINCINNATI ENQUIRER" PERTAINING TO "FLYING SAUCERS" SECURITY MATTER - X There is attached for your information and any action you desire to take in this matter a Photostat of a letter, written in German, received from an anonymous source, which was addressed to the "Cincinnati Enquirer." A Photostat of the envelope, in which the letter was forwarded, is attached and indicates it was mailed on July 31, 1952, at Cincinnati, Ohio. For your further assistance in this matter a translation of the attached letter from the German is attached. Attachment DECLASSIFIED BY 1259 ON 10-24-74 55016.0
Official release, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 271 pages are in the text index: search them above, or from the library's search.