Documents / Official release
This U.S. Department of War file collects Project Sign era checklists and incident summary sheets for incidents 101 to 172. The largest item is the 18 February 1948 explosion over Norcatur, Kansas. For it the file gathers witness statements, speculative letters from Norman G. Markham, and Dr. Lincoln LaPaz's view that it was a genuine meteorite fall with curious aspects. Other entries cover B-29 crews, a two-decked wingless object over the Netherlands, a Turkish rocket report, a Moscow sighting, and George Gorman's 1 October 1948 Fargo encounter.
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.
“Gray”2 pages
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On 4 July 48 at approx. 11:15 P.M., OST, witness and his wife thought they saw a star moving. There was a light in the sky the same color and size of a star which was moving. Then they thought it was a plane but it made no noise. The object moved across the sky, then changed its course a bit and went straight and stopped again for about 5 seconds, changed its course a bit and went straight for awhile and stopped again this time for at least 15 seconds, then it went across the sky a little ways and disappeared completely. When the object stopped in the sky, it resembled a star and only by following its course could the difference be noticed. NOTE: Witness states that he lives some 2-1/2 miles from the two woman (McKeesport, Pa.) who reported seeing a big silver plate zooming noiselessly overhead in the direction of Kennywood Park. See Inc. 161.
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. 178 pages are in the text index: search them above, or from the library's search.