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.
At approx 1407, 7 Jan 48, Capt Carter was called by Lt Orner, AACS Detachment Commander, to come to Tower to witness an unidentified aerial object. Object appeared round and white (whiter than the clouds that passed in front of it) and could be seen thru cirus clouds. After observing it thru field glasses for some 3-4 minutes, he called Col Hix's office. Col Hix, Lt. Col Wood & Capt Duesler came to the tower shortly thereafter. Capt Carter then suggested that a group of P-51 aircraft in the vicinity he contacted to pursue the object. T/Sgt Blackwell, Tower Operator, contacted the flight leader to take a look. Three planes proceeded on a heading of approx 230°. One of the planes (Mantell's) spotted it at 1200 o'clock position. Another plane relayed "This ks 15,000 ft, let's level out" First speed as relayed by Mantell (180 MPH) Later, "object going up and forward as fast as I am" - or 360 MPH. Mantell then stated he was going to 20,000 ft and if no closer would abandon chase. Last radio contact heard by Capt Carter. NOTE: Apparently, Mantell blacked out at 20,000 ft or proceeded on since the object apparently appeared closer(if such were the case)and then crashed thru lack of oxygen. Does not seem to tally with report that the phenomena was "Venus or a comet"
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.