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.
“Spencer”11 pages
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IN REPLY, PLEASE REFER TO FILE No. ___ UNIDENTIFIED AIRCRAFT McMurray, Wash. AREA Subject's Name and Aliases Address of Subject COMPLAINT FORM Character of Case DESCRIPTION OF SUBJECT: WILLIAM FLENER AIR ROUTE TRAFFIC CONTROL CENTER CIVIL AERONAUTICS ADMIN. Name of Complainant SEA-TAC AIRPORT Address of Complainant CHERRY-6100 Telephone Number of Complainant 6/21/54; 3 100 Date and Time Complaint Received FACTS OF COMPLAINT: Complaint advised that he was referring information furnished him by a Mr. Dawson a reliable CAA employee. Dawson resides at 8543-60 119th St, Seattle, Tel: MOHAWK-4069. Dawson recently visited his mother in McMurray, Wash. received the following info. from a pilot who lives next door to Dawson's mother town Dawson believes reliable ... This pilot stated that on several occasions an unidentified aircraft which the pilot believe to be a helicopter had appeared in the early hours of the morning has covered over the highway in the vicin. ACTION RECOMMENDED BY AGENT: Route A. Documents for info. SEARCHED INDEXED SERIALIZED FILED JUN 21 1954 FBI - SEATTLE
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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.