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
Witness was getting out of his car when he observed one disc flying in a Southwesterly direction over Portland. Disc was aluminum in color and traveled at terrific speed - faster than any flying object witness had ever seen - It left no vapor trail or smoke trail. Estimated altitude approx 30,000 ft. Thought the disc was definitely some type of aircraft but could not give further description as speed made observation difficult. No sound was heard from the flying object. No thought it appeared radio-controlled because the disc could change direction at a 90° angle without difficulty.
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.