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
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 6 May 1948 Incident # 167 2. Time 0905 GOT 3. Location 19° 08' N - 164° 05' E between Kwajalein Island, Marshall Islands and Hickam Field., 4. Name of observer Capt Floyd Barnes 5. Occupation of observer Pilot USAF 6. Address of observer Pacific Division, Milit Air Trans Service 7. Place of observation Ahead & above his plane Number of objects 1 9. Distance of object from observer 4 to 5 miles 10. Time in sight split second Altitude 10,000 ft Speed N/S 13. Direction of flight N/S 14. Tactics exploded like a shall 15. Sound N/S 16. Size N/S 17. Color white 18. Shape ball 19. Odor detected N/S 20. Apparent construction N/3x "fire" Exhaust trails None 22. Weather conditions 5/10 cloud coverage Effect on clouds N/S 24. Sketches or photographs none 25. Manner of disappearance exploded 26. Remarks: (over)
Official release, from the pursue collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 178 pages are in the text index: search them above, or from the library's search.