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.
“Hill”2 pages
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## CONFIDENTIAL On 30 June 1947 at about 0910 MST, William G. McGinty, P-80 pilot was flying at 25,000 feet over Grand Canyon, Arizona, heading south towards Williams Field, Arizona, when he saw 2 round objects going at inconceivable speeds straight down. One of the unidentifiable objects followed the other seconds apart. Due to their speed he could see only that they were circular and possibly light gray in color. In his opinion the objects were approximately 8 feet in diameter. He estimated that the objects would have probably hit the ground approximately 25 miles south of the South Rim of Grand Canyon, Ariz. AGENT'S NOTES: Lt McGinty gave his permanent address as: N. A. M. T. C., Point Hugu, Port Hueneme, Calif. 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.