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.
“Los Angeles Times”1 page
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## CONFIDENTIAL Observer flying a National Guard AT-6 was on an easterly heading pointing toward Gowan Fld and had flown that course for a minute when there appeared in the left hand portion of his field of vision a round black object. Due to its erratic movement he first thought it a weather balloon. Calling the weather station he ascertained that no release had been made for several hours. He then exposed 10 second's duration of 8 mm motion picture film. Centering his gaze once more on the object he observed it to roll so that its edge was presented. At this time it flashed once in the sunlight. It then appeared as a thin black line. Then it performed a maneuver which looked as if it had begun a slow roll - (barrel roll) which instead of being completed was broken off at about the 180° point. The object rolled out of the top of the maneuver at this point and observer lost sight of it. Performance viewed against background of clouds. Object appeared relatively as the size of a twenty-five cent piece. Observer could not estimate the speed. He thought tho that it was very great The above design portrays the movements of the object. At all times the object appeared black. Positions (1) (2) and (3) show the jerky rising motion. Position (4) is where it rolled presenting its edge to the observer. It then followed the dotted line, rolling over the top of the maneuver and disappearing at position (5). CONFIDENTIAL
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.