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.
“Hamilton”5 pages
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Observers did not see the object but only four or five flashes approximately one second apart and equidistant. The flashes appeared silvery to reddish in color and were likened to the glow of a firefly excepting they were larger and at equal intervals. The witnesses did not believe the flashes were occasioned by either a shooting star or a plane, because of the evenly-spaced discharges or flashes, the color and the speed
Corroboration:
Capt Gullage, Master of the "Burgeo" also saw the flashes while standing on the starboard deck. He stated that he had seen the same thing at approximately the same time and location on the evening of 15 July 47 except at that time the object or flashes were traveling faster and frequently changed courses ("it changed course abruptly several times") and was headed generally to the SSW. 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.