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
Read from the scan by GLM-OCR; expect the odd misread word.
Object appeared round and probably spherical. At first looked similar to weather balloon at about 2000 ft but there was no characteristic bobbing. The wind was blowing on the ground with fair strength and gusty yet the object was quite steady. In the time it was under observation (about an hour) it traveled thru a vertical arc of about 25° or more. After watching the object for a while the observer concluded that whatever it was the thing was at great height but not a star. It had a bluish luminescence like a fluorescent lamp and as the sun set the color gradually changed to an orange color at dusk and finally snapped off like a lamp when the switch is thrown. The outline was clear and sharp and symetrical (no fuzziness or blurring), the air clear with visibility unlimited. Direction of travel from East directly toward the sun.
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.