Documents / FOIA release
This Federal Bureau of Investigation file section collects 1947 records on flying disc reports, including field office memoranda from Butte, Seattle, Salt Lake City and San Francisco on sightings in Washington, Montana, Utah and Idaho. Several were attributed to burnt paper or weather balloons, and Wright Field judged debris from a Danford, Illinois farm a hoax unconnected to Project Mogul. After the Army Air Forces described FBI work as chasing "ash can covers, toilet seats and whatnot," the Bureau discontinued its flying disc investigations and referred reports to the Air Forces.
“United Press”3 pages
Letter to Director, FBI Re: Flying Disks In conclusion, the second officer pointed out that one of the remarkable features of this object was that it was definitely traveling against the wind. The exact date of the sighting of this object was not furnished this office, and inasmuch as it occurred previously to the receipt of Bureau instructions in this matter, no further investigation is being conducted by this office unless specifically requested to do so by the Bureau. 100-1403 HLM:GNH
FOIA release, from the fbi-vault 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. 77 pages are in the text index: search them above, or from the library's search.