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.
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On 11 October 1948 at approximately 1300 hours an unidentified object was observed by six military personnel of 86th Fighter Wing Neubiberg AF Base, Neubiberg, Germany. Object was estimated to be at 40,000 ft on a 50° heading from Neubiberg AF Base and was sighted continuously for 45 minutes, gradually becoming smaller and smaller - apparently rising but no change in compass direction was noted and it was apparently not influenced by the winds aloft. The visible circumference of the object appeared round but it could not be ascertained if it were disco-shaped or ballist-shaped. It was silver in color and very shiny in the rays of the sun. An AF-80 craft flying between the object and the observers on the ground appeared small in relation to the size of the object. The estimated altitude of the jet was 25,000 ft. Object was lost to view when a thin layer of clouds (estimated to be at about 20,000 ft) passed between the object and the ground observers. high reliability is given the personnel sighting this object.
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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.