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.
Read from the scan by GLM-OCR; expect the odd misread word.
CONFIDENTIAL CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 18 February 1948 Incident # 102 2. Time 1500 MST 3. Location Air Near Green River, Utah 4. Name of observer Lenord P. Marchese (B-29 Pilot, Lt. 28 Bomber Gp) Carl W. Stucki, Lt., Co-Pilot, (see reverse side 5. Occupation of observer Pilot for other witnesses) 6. Address of observer 77th Bomb Sq, 28th Bomb Gp (VH), Weaver AFB, S.D. 7. Placo of observation 39° N - 100° W - near Green River, Utah 8. Number of objects One 9. Distance of object from observer 100 miles 10. Time in sight N/S 11. Altitude 20,000 feet 12. Speed Very high 13. Direction of flight Southeast of Limon, Colorado Tactics Explosion rate Sound Could not be determined due to B-29 engine noise Size Huge 17. Color Multi-colored ball of fire 18. ShapeHuge multi-colored ball of fire and dense cloud of smoke Odor detected N/S Apparent construction N/S Exhaust trails Vapor trail with ball of fire at head of trail 22. Woathor conditions Clear 23. Effoct on clouds N/S 24. Skotohos or photographs None 25. Manner of disappearance N/S 26. Remarks: Max Over CONFIDENTIAL
Official release, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 178 pages are in the text index: search them above, or from the library's search.