Documents / Official release

65 HS1-834228961 62-HQ-83894 Section 006

Federal Bureau of Investigation · 271 pages · text by OCR

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.

  • p. 115 …Captain Mantell could never have reached the height at which the balloon was traveling." "Our studies…
  • p. 172 …30, 1947, with the understanding he might never have them returned. Blumenthal was advised the FBI…
  • p. 178 …had not been dreaming." He continued: 'I never heard the expression flying saucer until I escaped…
  • p. 179 …And the Oval wicket, though it needed watching, was never anything remotely wicked. Yorkshire have a…
  • p. 182 …30, 1947, with the understanding he might never have them returned. Blumenthal was advised the FBI…
  • p. 185 …30, 1947, with the understanding he might never have them returned. Blumenthal was advised the FBI…
  • p. 198 …He advised that the sightings reported in the last classification have never been satisfactorily explained. He…
  • p. 222 …Jesus Leoffreda Benson be salvaged your have never heard of Bentford doe he I effects the…
  • p. 243 ## (3) When you look at it from that point you can see they can never be…
  • p. 251 …cloud being charged electrically and a magnetic polarity being same as the interceptor it can never
  • p. 253 …being same as the interceptor it can never be overtaken, and would if persued gradually grow…
  • p. 260 …Since air lenses are almost never perfect, the world we see through them is distorted and…
Summary of Sightings of Unknown Aerial Phenomena, 17th District OSI (cont)

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	Hammer of Disappearance
147	194919 Nov	2152	1	R	Los Alamos, New Mexico	Vertical Green 2 secs	None
148	25 Nov	2000	5	R	Los Alamos, New Mexico	E to W	15°-10° above horizon	Downward 10° from the horizontal	Yellowish green 2 secs	None Disappeared behind mt.
149	27 Nov	1800	1	Unk	McIntosh, New Mexico	Vertical	Less than 2,000'	Vertical descent	Green	None	1 sec	None	Shaped like a flare	Same as a signal flare	Same as falling signal flare	Same as signal flare
150	27 Nov	1750	1	Unk	Winslow, Arizona	E to W	30° above horizon Bright blue-white	Yes	3-4 secs	None	Egg shape	Egg held at arm's length	3-4 secs to cover 15°-20° of horizon	Dwindled out
151	27 Nov	1749	1	R	Albuquerque, New Mexico	E to W	30°-5° above horizon	Sloping descent	Blue-white	None	1-2 secs	None	Round	Pencil eraser at arm's length	50°-70° in 1 or 2 secs	Went out then on then out again
152	27 Nov	1749	1	R	Socorro, New Mexico	E to W	100°-400° above horizon	Arc	Pale green to pale blue	Yes	5 secs	None	Round	Quite large	Slower than meteor	Faded out gradually

Cases discussed

About this file

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.