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.
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS
1. Date 9 January 1948
Incident # 121
2. Time 2330
3. Location Cartersville, Georgia, $ 3 4^{\circ} $ 10' N, $ 8 4^{\circ} $ 49' W
4. Name of observer Hugh DuBose
5. Occupation of observer Pilot (EAL)
6. Address of observer N/S
7. Place of observation Air
8. Number of objects One
9. Distance of object from observer N/S
10. Time in sight N/S
11. Altitude 3000 feet
12. Speed 400 mph
13. Direction of flight $ 1 7 5^{\circ} $ M
14. Tactics None
15. Sound N/S
16. Size N/S
17. Color Light, sky-blue
. Shapo Circular, except for the top quarter which was flat, pot-
19. Odor detected N/S
20. Apparent construction N/S
21. Exhaust trails None
22. Weather conditions N/S
23. Effect on clouds
24. Sketches or photographs None
25. Manner of disappearance $ 1 0^{\circ} $ below the horizon
26. Romarks: When object crossed the path of the witness all that could be observed was an intense blue flame, in a shape circular except for 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.