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 Incident # 142 2. Time 3. Location 4. Namo of observer Mr. Charles W. Shangle, Jr. 5. Occupation of observer 6. Address of observer Boise, Idaho 7. Place of observation 8. Number of objects 9. Distance of object from observer 10. Timo in sight 11. Altitude 12. Speed 13. Direction of flight 14. Tactics 15. Sound 16. Size 17. Color 18. Shape 19. Odor detected 20. Apparent construction 21. Exhaust trails 22. Weather conditions 23. Effect on clouds 24. Sketches or photographs 25. Manner of disappearance 26. Remarks:
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.