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 30 June 1948 2. Time 11:25 A.M., to 1:27 PM and shortly thereafter 3. Location Hecla, South Dakota 4. Namo of observer Norman Pfutzenreuter 5. Occupation of observer Chemical Engineer - Amateur Astronomer 6. Address of observer Hecla, South Dakota 7. Place of observation Between Watertown, S. D., & Webster, S. D. 8. Number of objects 1 9. Distance of object from observer N/S 10. Timo in sight Slightly over two hours 11. Altitudo 150 miles (?) 12. Speed Stationary 13. Direction of flight Stationary 14. Tactics Remained in one position then disintegrated 15. Sound None 16. Size N/S 17. Color Like polished aluminum 18. Shapo Changing 19. Odor dotoctod None 21. Exhaust trails Particles of disintegrating mass left very faint trails of vapor 22. Weather conditions Brilliantly clear (CAVU)-Wind velocity 3 MPH Effect on clouds No clouds 24. Sketches or photographs Map showing locations of sightings 25. Manner of disappearance Disintegrated into smaller pieces 26. Romarks: Object appeared as cluster of parts which remained fairly stationary and constant for some two hours when it underwent a rather slow change in shape. A large chunk fell off. Within the next 2-1/2 minutes the entire spot started to very slowly disintegrate. Three larger parts moved (over)
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.