Documents / Official release
This U.S. Department of War file, undated, holds checklist summaries of incidents 1 to 100 of unidentified flying objects reported in 1947 and early 1948. The first entries cover sightings of silver discs and spheres by officers and staff at Muroc Army Air Field on 7 and 8 July 1947. Next come the Portland, Oregon police reports of 4 July, a United Air Lines crew near Emmett, Idaho, and a set of 30 December flame and explosion reports from California and Nevada. The file ends with two Finnish sightings.
From the source:Release of 2026-05-08 Incident: N/A, N/A. NARA Record Group 38, catalogue id 143685. Each of these incident summaries 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.
“Anderson”4 pages
Read from the scan by GLM-OCR; expect the odd misread word.
## RESTRICTE
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 $ 7 0^{\circ} $ 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 $ 2 0^{\circ} $ or $ 3 0^{\circ} $ . 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 $ 7 0^{\circ} $ 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 saucer". Official release, 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. 209 pages are in the text index: search them above, or from the library's search.