Documents / Report
This U.S. Air Force compilation, released by the U.S. Department of War, holds numbered checklists and survey sheets for flying object incidents 1 through 100. It covers sightings by officers, test pilots and civilians at Muroc Army Air Field on 7 and 8 July 1947, and sightings by Portland, Oregon police on 4 July 1947. It also includes fireballs seen over California, Nevada and Oregon on 30 December 1947, a Houston fireball, and Finnish reports from January 1948.
From the source:Release of 2026-06-12 Incident: United States. Includes a "Check-List - Unidentified Flying Objects" that contains details about the incident. Many summaries also include witness lists or statements and other narrative reports or descriptions.
“Sea”10 pages
During normal night-flying practice at 2230 hours on 16th Jan. one of British Mosquitos was vectored on to an unidentified A/C at 22,000 ft. A long chase ensued commencing over the North Sea about 50 miles from the Dutch Coast and ending at 2300 hours over Norfolk. Two brief AI contacts were made but faded quickly. The unidentified aircraft appeared to take efficient controlled evasive action. No explanation of this incident has been forthcoming nor has it been repeated.
Report, 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. 253 pages are in the text index: search them above, or from the library's search.