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
Read from the scan by GLM-OCR; expect the odd misread word.
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS
1. Date 29 July 47
Incident # 52
Time 1450
Location Hamilton Fld., Calif
Name of observer Capt William H. Ryherd
5. Occupation of observer Capt, USAF, - Assistant Operations Officer
6. Address of observer Hamilton Fld
7. Place of observation Hamilton, Fld., Calif. 38 $ 03^{\prime} $ N 122 $ 31^{\prime} $ W
8. Number of objects 2
9. Distance of object from observer observed from ground
10. Timo in sight N/S
11. Altitude 8,000-10,000 ft
12. Speod very fast - made P-80 look as if it were motionless
13. Direction of flight Southward toward Oakland
Tactics 1st object pursued horizontal flight; 2d object seemed to be going from left to right and right to left
15. Sound like guard in aircraft formation No sound heard
16. Size 15-25 ft in diameter
17. Color white shiny
18. Shape circular like a ball
19. Odor detected N/S
20. Apparent construction N/S
21. Exhaust trails None
22. Woather conditions Clear
Effect on clouds N/S
24. Sketches or photographs None
25. Manner of disappearance Disappeared in flight
26. Remarks: (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.