Documents / Official release
This U.S. Department of War file, undated, holds checklist summaries of incidents 1 to 100 of unidentified flying objects reported in 1947 and early 1948. The first entries cover sightings of silver discs and spheres by officers and staff at Muroc Army Air Field on 7 and 8 July 1947. Next come the Portland, Oregon police reports of 4 July, a United Air Lines crew near Emmett, Idaho, and a set of 30 December flame and explosion reports from California and Nevada. The file ends with two Finnish sightings.
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.
“Hamilton”5 pages
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS 1. Date 28 June 47 2. Time afternoon Incident # 45 3. Location Illinois 5. Occupation of observer N/S 6. Address of observer N/S 7. Place of observation Illinois 8. Number of objects 7 to 10 9. Distance of object from observer 10. Timo in sight 11. Altitude 12. Speed 13. Diroction of flight 14. Tactics 15. Sound 16. Size 17. Color 18. Shape 19. Odor detected 20. Apparent construction 21. Exhaust trails 22. Weather conditions 23. Effect on clouds 24. Sketches or photographs 25. Manner of disappearance Romarks: This info broadcast 29 June 47 at 8:00 A.M. over WGN "The Latest News". Charles Sebastin, announcer. (over)
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. 209 pages are in the text index: search them above, or from the library's search.