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.
“Headquarters”4 pages
Read from the scan by GLM-OCR; expect the odd misread word.
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 18 February 1948 Incident # 101 2. Time 5:01 P.M. 3. Location Norcatur,ansas 4. Name of observer M. R. Krehbiel account (taken from newspaper) 5. Occupation of observer Editor 6. Address of observer Norton, Kansas 7. Place of observation Norcatur, Kansas 8. Number of objects one 9. Distance of object from observer N/S 10. Timo in sight N/S 11. Altitude 30-35 miles above earth 12. Speed N/S 13. Diroction of flight N/S 14. Tactics N/S 15. Sound One big explosion - "afterwards a lot of little explosions" 16. Size N/S 17. Color Bluish-white smoke smudge 18. Shape Mushroom 19. Odor detected N/S 20. Apparent construction Meteor 21. Exhaust trails None Bluish-white smoke smudge 2. Weather conditions N/S Effect on clouds N/S Sketches or photographs Photo of vapor trail left in sky by explosion Manner of disappearance Disintegration 26. Remarks: Oscar Monnig, of the Texas Observers, Amateur Astronomy, 1010 Morningside Drive, Ft. Worth, offers "tangible proof that the fireball
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.