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.
“Holloman Air Force Base”1 page
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 5 April 1948 Incident # 122 2. Time N/S 3. Location Holloman Air Force Base 4. Name of observer Mr. Olsen 5. Occupation of observer Trained balloon observer, Geophysics Lab Section 6. Address of observer N/S 7. Place of observation From the ground 8. Number of objects One 9. Distance of object from observer N/S 10. Time in sight 30 seconds 11. Altitude Very high 12. Spood Faster than any known aircraft 13. Direction of flight N/S 14. Tactics Eratic - completing a large loop after its downward descent, then soaring upward and disappearing suddenly 15. Sound None 16. Size Large Color Grey-white 18. Shape Rounded, indistinct form Odor detected N/S 20. Apparent construction N/S 21. Exhaust trails N/S 22. Woathor conditions C.A.V.U. Effect on clouds N/S Sketches or photographs None Manner of disappearance Disappeared suddenly 26. Remarks: This was evidently the one object, of two sighted by another witness, that veered to the right and down. Its vaguely
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.