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.
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CHECK-LIST - UNIDENTIFIED FLYING OBJECTS
INCIDENT 134a
1. Date 28 May 1948
2. Time 1500 hours (Eastern Daylight Saving Time)
3. Location Selfridge Fld., Mt. Clemens, Mich f/MaoDill Fld Position: 6 miles due east of Monroe, Michigan
4. Name of observer M/Sgt Ernest Davis, Jr. (colored)
5. Occupation of observer M/Sgt
6. Address of observer Selfridge Field
7. Place of observation 6 miles due east of Monroe, Michigan
8. Number of objects 2
9. Distance of object from observer 25 to 30 miles to left
10. Time in sight 30 seconds
11. Altitude approx 8,000 ft
12. Speed Over 400 miles per hour
13. Direction of flight South West from $ 3 5^{\circ} $ at 8:00 o'clock position
14. Tactics Pursued straight course
15. Sound N/S
16. Size Appeared to be four feet in diameter
17. Color Shiny brass
18. Shape round
19. Odor detected N/S
20. Apparent construction N/S
21. Exhaust trails None
22. Weather conditions Clear, high overcast at 18,000 ft; thin stratus layer broken at 8,000 ft, lateral visibility:
23. Effect on clouds 10 to 15 miles
24. Sketches or photographs Sketch
25. Manner of disappearance N/S
26. Remarks Discrepancy as to position of 2nd object in group 2 as sighted by Lt Kokblomis (Inc 134) Witness perceived only top-side of object. Objects seen flying over wooded section 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.