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.
“Hull”1 page
INCIDENT 132 MA R-365-47 NAD 12199 T-7477 KK 4210 CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 12 Dec 1947 2. Time 2205 & 2208 3. Location Oslo, Norway 4. Name of observer Daughter to MA Kai E. Rasmussen, Col GSC 5. Occupation of observer N/S 6. Address of observer Same as MA, Oslo, Norway 7. Place of observation Oslo, Norway (Ground) 8. Number of objects 1 9. Distance of object from observer N/S 10. Time in sight Between two and three seconds N/S (Apparently traveling fairly close to ground or would be visible to more people) Not quite as fast as a meteor 12. Speed 13. Direction of flight SSE-SSW to NNW- (?) 14. Tactics Performed arc of circle, curvature-very great 15. Sound None 16. Size N/S 17. Color Luminous white with greenish-yellow tail 18. Shape N/S 19. Odor detected None 20. Apparent construction Meteor-like 21. Exhaust trails Greenish-yellow trail 22. Weather conditions No fog, sky clear and star-lit 23. Effect on clouds none 24. Sketches or photographs none 25. Manner of disappearance Trees obscured vision 26. Remarks: Office employee reports unusual no. of falling stars night of 13 Dec. Univ Observatory has no record of incident.
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.