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.
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 1 Oct 1948 Incident # 172 2. Time 2100 hrs 3. Location Fargo N. Dakota 4. Name of observer George F. Gorman 5. Occupation of observer Manager of Const Co. (Pilot of F-51 in Air N.G.) 6. Address of observer Bldg. 18 Fed Hous Proj Fargo N. Dakota 7. Place of observation from Airplane over Fargo and vicinity 8. Number of objects 1 9. Distance of object from observer 1000 fd at the closest point 10. Timo in sight 27 minutes 11. Altitude from 1000 to 14000ft 12. Speed much faster than F-51 13. Direction of flight various 14. Tactics several left turns one right turn, diving and climbing Sound None noted 16. Size at closest observation 6 to 8 inches 17. Color clear white 18. Shapo round at all times Odor detected none 20. Apparent construction none noted 21. Exhaust trails none seen Weather conditions CAVU Effect on clouds none Skotohes or photographs none Manner of disappearance in steep climb 26. Remarks: Northern lights were visible in the nE. quadrant.
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.