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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disc-like body. I cannot be sure as the object only covered about one fortieth of the diameter of the field, which would make it about 20 seconds of arc; it was either very small or very high. At no time did any part appear to rotate, but the heliocopter like arms, four in number, appeared to be surrounded by a thin vaporous ring about witish blue in color. The attached sketch, showing the object as it appeared from the bottom will give you my last impression. Just as I had become convinced this was a radar target balloon made of transparent plastic, the object began to move. It moved at incredible speed toward the east disappearing on the eastern horizon in about 10 seconds. The latter motion could only be observed with the naked eye due to the tremendous speed. I spend about 4 hours a week looking through this glass while target shooting and am confident that I observed a factual object of very unusual nature. As you will find upon examination I am a design supervisor in charge of the CA 512 R design encompassing some rather important aspects of the present expansion program, being designed by the Engineering Department of the General Electric Company. I deal strictly in facts, and hope you will treat this report factually. I am willing to enlarge upon this matter if called on to do so; no short description being adequate. Sincerely yours, ROBERT T. JASKE /s/
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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.