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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(C) FLYING DISCS -- Reference is made to Bureau Bulletin #57, Paragraph D, dated October 1, 1947, and SAC Letter #38, dated March 25, 1949, in the captioned matter. It is noted that some Bureau field offices are not furnishing to OSI locally complaints regarding flying discs, pursuant to existing Bureau instructions. Upon receipt of information by your office relating to the sighting of a flying disc, you should endeavor to determine from the complainant details of the type referred to in the Air Force memorandum, which was furnished to your office as an enclosure to SAC Letter #38. The information should then be promptly furnished to OSI locally by your office. As you are aware, the investigation of so-called flying discs is the responsibility of the Department of the Air Force. Sorter # 83 829/52 ALL INFORMATION CONTAINED HEREIN IS UNCLASSIFIED EXCEPT WHERE SHOWN OTHERWISE Menn NW 90291 Docld:34714596 Page 7
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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.