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.
“The Pentagon”13 pages
Read from the scan by GLM-OCR; expect the odd misread word.
Dr. LaPaz, Director, Institute of Meteoritics, University of New Mexico, submitted an analysis of the various observations on May 23, 1950. He concluded, as a result of his investigation, that approximately half of the phenomena recorded were of meteoric origin. The other phenomena commonly referred to as green fireballs or discs he believed to be U.S. guided missiles being tested in the neighborhood of the installations. Dr. LaPaz pointed out that if he were wrong in interpreting the phenomena as originating with U.S. guided missiles that a systematic investigation of the observations should be made immediately. Dr. LaPaz pointed out that missiles moving with the velocities of the order of those found for the green fireballs and discs could travel from the Ural region of the USSR to New Mexico in less than 15 minutes. He suggested that the observations might be of guided missiles launched from bases in the Urals. On the basis of the investigations made by Dr. LaPaz and the Air Force, it was concluded that the occurrence of the unexplained phenomena in the vicinity of sensitive installations was a cause for concern. The Air Force entered into a contract with Land-Air, Incorporated, Alamogordo, New Mexico, for the purpose of making scientific studies of the green fireballs and discs. It was pointed out in the summary furnished by OSI on July 19, 1950, that the unexplained green fireballs and discs are still observed in the vicinity of sensitive military and Government installations. ## RESULTS OF AIR FORCE INVESTIGATION The Air Force together with Land-Air, Incorporated, have established a number of observation posts in the vicinity of Vaughn, New Mexico, for the purpose of photographing and determining the speed, height and nature of the unusual phenomena referred to as green fireballs and discs. On May 24, 1950, personnel of Land-Air, Incorporated, sighted 8 to 10 objects of aerial phenomena. A 24-hour day watch is being maintained and has been designated "Project Twinkle."
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.