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.
“Anderson”4 pages
Read from the scan by GLM-OCR; expect the odd misread word.
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS
1. Date 7 Jan 48
Incident # 48c
2. Time 19:30
3. Location Clinton County AAF, Wilmington, O.
4. Namo of observer S/Sgt John P. Haag
5. Occupation of observer S/Sgt
6. Address of observer Clinton County AAF
7. Place of observation Control Tower
8. Number of objects 1
9. Distance of object from observer N/Sx Around 5 miles from field
10. Time in sight 25 minutes
11. Altitude 15,000 to 20,000 ft
12. Speed N/S - apparently slow
13. Direction of flight. heading of $ 2 1 0^{\circ} $
14. Tactics Moved from altitude of 15,000 ft to 10,000 ft without noticeble forward or backward motion (about 3 or 4 times) Sound N/S
15. Sound N/S
16. Size N/S
17. Color changing colors (red and green)
18. Shapo N/S
19. Odor detected N/S
20. Apparent construction N/S
21. Exhaust trails N/S
Weather conditions overcast
Effect on clouds could be seen thru overcast
Skotches or photographs None
Manner of disappearance disappeared over horizon on heading of 210 $ ^{\circ} $
26. Romarks: (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. 209 pages are in the text index: search them above, or from the library's search.