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.
“Seattle”36 pages
# DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE WASHINGTON HLW:rs THE INSPECTOR GENERAL USAF 20th DISTRICT OFFICE OF SPECIAL INVESTIGATIONS McCHORD AIR FORCE BASE, McCHORD FIELD, WASHINGTON 20D OSI 24-0 24 June 1954 Mr. R. D. Auerbach Special Agent in Charge Federal Bureau of Investigation 1015 Second Avenue Seattle, Washington Re: Unidentified Flying Objects Dear Sir: The following is quoted for your information from an Intelligence Summary, 25th Air Division to Air Technical Intelligence Center, Wright-Patterson AFB, Ohio, concerning Unidentified Flying Objects, as reported to Special Agent SULLIVAN, your office, on 22 June 1954: "SUMMARY "FLYING OBJECT REPORT GROUND AND AIRBORNE RADAR SIGHTINGS OF UNKNOWN BLIPS OR TARGETS An unknown blip or target was picked up on TIMOTHY radar control scope in Georef LE 1604, estimated 200 knot speed, estimated altitude 15 angles, originally at 0314Z and intermittently thereafter for a total of three (3) sightings by TIMOTHY within a ten (10) minute period after which time blip or target remained off. Upon first pickup, TIMOTHY relayed information to MERCURY (Direction Center) who took immediate action to vector two fighter interceptors, Pronto Blue #1 and 2, (who were on CAP, at 0400Z) off CAP to vicinity of blip or target. Pronto Blue #2 obtained an airborne radar pickup lower left portion scope, approximately twenty-eight (28) miles from blip or target which separated into two "clear distinct" blips at 0435Z; altitude 25,000 feet. Blue #2 attempted to close on 30 degree port heading in attempt to center blip, descending from 25,000 feet to 6,000 feet and to within estimated six (6) miles with speed increasing from .85 to .9 Mach. Blip then slid off scope from 30 degree port to 60 degree port. Blue #1 obtained an airborne radar pickup at 30 degrees at approximately 0436Z at 20,000 feet altitude. Blue #1 held pickup for approximately twenty (20) seconds, or three sweeps of AI radar after which time blips or targets slid off scope from 30 degrees port to 60 degrees port. Stupper 81 x 51 59 cm try 100. 18945 CONFIDENTIAL 10018945-5808 SEARCHED INDEXED SERIALIZED FILED JUN 25 1954 FBI - SEATTLE
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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. 55 pages are in the text index: search them above, or from the library's search.