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 Date 27 July 1948 Incident # 147 Time 2200 Location Springfield, Ohio 4. Name of observer Mrs. H. H. Gibson 5. Occupation of observer Housewife 6. Address of observer 1217 East Main St. 7. Place of observation Springfield, Ohio 8. Number of objects 1 9. Distance of object from observer N/S 10. Time in sight 3 seconds 11. Altitude Great height 12. Spood That of a jet plane 13. Direction of flight Heading North 14. Tactics None - traveled in a straight line 15. Sound None 16. Size Witness stated object resembled a "huge ball" 17. Color N/S 18. Shape Round 19. Odor dotected None 20. Apparent construction N/S Exhaust trails Bright red tail of fire. Weather conditions Some thunder and lightning Effect on clouds N/S Sketches or photographs None Manner of disappearance Flew out of sight 26. Romarks: See attached
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.