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.
“Gray”5 pages
Read from the scan by GLM-OCR; expect the odd misread word.
About 9 o'clock, well after dark, Lt Col F. L. Walker, Jr. GSC. of the Scientific Branch, Research Group, saw a low flying object appear over the top of a barn to his left traveling in an absolutely straight line in an arc of about 70° moving from north to south. The object appeared as a bright orange glow of flame and left behind it a long, straight, narrow white streak of flame similar to the streak left by a tracer bullet and itself, covering an arc of approximately 20° or 30°. There appeared to be a fine mist of smoke trailing behind this streak which vanished very quickly. The object took about 3-4 seconds to cover the arc of 70° and then simply vanished in mid air. The path traveled was absolutely horizontal. Witness states he never observed a comet which acted in this manner and was of the opinion that he had sighted a "flying cancer".
Report, 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. 253 pages are in the text index: search them above, or from the library's search.