Documents / Official release
This Air Materiel Command file, released by the U.S. Department of War, holds Incident Summary Sheets 173 through 233, sent under a 1949 transmittal. Most of the sheets record sightings of unidentified aerial objects in 1948 and early 1949. They cover Santa Fe, New Mexico, San Pablo, California, Honolulu, Kentwood, Louisiana, and Jackson, Mississippi. Each sheet gives the observer's details and the object's size, speed and shape, and often an investigator's note on how reliable the witness seemed. The file ends with a blank guide for investigating reports, including radar 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.
“Mission Control”1 page
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INCIDENT SUMMARY SHEET Incident No. 220 1. Date and Time of Observation: 29 Nov 1948 2113 2. Where Sighted: San Francisco, Calif 3. Observer's Position: ground (i, e., ground, air, control tower, etc.) 4. Name and Address of Observer: Mr Robert Thatcher, 1739 38th Ave., San Francisco, Calif 5. Occupation and/or hobbies: Science Teacher Francisco Jr High School 6. Attention Attracted by: yellow light flashing across the sky 7. Number of Object(s) Seen: 1 8. Size of Object(s): N/S 9. Color of Object(s): yellow 10. Shape (Sketch if Possible) N/S "flash of light" 11. Nature of Luminosity: B/S (directed beam of light?) 12. Altitude of Object: N/S (estimated) 13. Estimated Distance of Object from Observ. r: N/S 14. Estimated Speed of Object: "too fast for plane" 15. Time in Sight: 7 seconds 16. Tactics: 1st headed north then turned north-north west 17. Sound Made by Object(s): N/S 18. Direction of Flight of Object(s) North Northwest 19. Apparent Construction: flash of light 20. Effect on Clouds: N/S 21. Exhaust Trail Color of): N/S - just flash of light was observed 22. Manner of Disappearance: N/S 23. Weather Conditions at Time of Sighting: N/S 24. Peculiarities Noted: Extreme speed - too fast for plane but did not think it was a comet or shooting star 25. Summary of Incident: (See attached page)
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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. 144 pages are in the text index: search them above, or from the library's search.