Documents / Official release
This Federal Bureau of Investigation Seattle field office file (100-18945) gathers flying saucer material from 1952 to 1960. It holds newspaper clippings, citizen complaint forms and agent memoranda about sightings over Pasco, Kennewick, Seattle, Richland and the Hanford reservation, Spokane and other Washington locations. The file records 1952 agreements with military intelligence on passing reports to OSI and the Air Force. One Hanford sighting from 1953 was attributed to a meteorological balloon. The FBI itself carried out no investigations.
From the source:Release of 2026-06-12 Incident: July 1952-1960, Washington State, United States. This file details an investigation of various sightings of Unidentified Flying Objects (UFOs) in Washington state between July 1952 and August 1960. This file includes memoranda and correspondence between the Federal Bureau of Investigation and the U.S. Air Force regarding UFO sightings.
“FBI file”15 pages
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# Air Force Asks Reports on 'Saucers' WASHINGTON, Feb. 27. (U.P.I.) The Air Force has sent its commands a new warning to treat sightings of unidentified flying objects (U. F. O.'s) as "serious business" directly related to the nation's defense, it was learned today. An Air Force spokesman confirmed issuance of the directive after portions of it were made public by a private "flying saucer" research group. The new regulations were issued by the Air Force in- The regulations, updating similar ones issued in the past, outlined procedures and said that "investigations and analysis of U. F. O.'s are directly related to the Air Force's responsibility for the defense of the United States." Existence of the document was revealed by the National Investigations Committee on Aerial Phenomena. The big-name, privatelyfinanced committee accused the Air Force of deception in publicly describing unidentified-flying-object reports as delusions and hoaxes while sending the private admonition to its commands. Vice Adm. R. H. Hillenkoetter (ret.), a N. I. C. A. P. board member and former director of the Central Intelligence Agency, said in a statement that a photo-copy of the inspector general's warning had been sent to the Senate Space Committee. "It is time for the truth to be brought out in open congressional hearing," Hillenkoetter said. SEATTLE TIMES FEB 28 1960 PAGE 6 COL 5 COPY SENT TO BUREAU SEARCHED...INDEXED... SERIALIZED...FILED... FEB 28 1960 4665 100-18945-79 ALL INFORMATION CONTAINED
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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. 55 pages are in the text index: search them above, or from the library's search.