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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Mr. Clark's attention was first drawn to the object by his partner, Mr. Anderson. It appeared to be a black object which was traveling at an estimated height of 8/10,000 ft above the ground and was moving in a straight line from northwest to southeast. It was traveling some 350 MPH. It did not change elevation nor direction. From their range of vision where they were standing upwards to the object would be at about a 25° angle. It remained within their vision from 45 seconds to a minute. No sound was audible. Mr. Clark thought the nearest thing it resembled was a "flying wing." However, both men stated positively that there was no tail visible. From where they were the object appeared about 3 feet in diameter but could offer no estimate as to its size were it on the ground. As to color both stated that the object appeared red against a blue background and black against a white cloud. Ground wind was about 15 miles in velocity and was blowing in a northeasterly direction which would tend to carry any sound away from them. Both men are pilots. Mr. Clark was a pilot in the U. S. A. F. for a period of 5 years, flying fighter type of pmx planes during most of this period. Mr. Anderson was a gunner in the AAF for 2 years and is also a pilot. Both appeared level headed and not excitable, and were very sincere in making the report. 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.