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
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## RESTRICTED John Snyder, a former pilot of B-24 in the Army Air Corps advised that he was sitting on the steps of his home around 10:45 P.M. the night of Aug 6, 1947 and that his neighbors, the Kelly family, were also sitting on their steps. All parties were facing east. Snyder noticed an object which emitted a bluish-white flame pass quickly thru the air. It was traveling NE to SW. Using his experience in the Army Air Corps he estimated the speed as between 400 to 500 MPH. The object did not lose elevation and left either a smoke or condensation trail in its former path. The vapor lasted for about 2 seconds. A hissing sound accompanied the passing. The sound was moderate and not nearly as loud as that occasioned by a rocket ship.
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.