Documents / Official release
This U.S. Department of War file collects Project Sign era checklists and incident summary sheets for incidents 101 to 172. The largest item is the 18 February 1948 explosion over Norcatur, Kansas. For it the file gathers witness statements, speculative letters from Norman G. Markham, and Dr. Lincoln LaPaz's view that it was a genuine meteorite fall with curious aspects. Other entries cover B-29 crews, a two-decked wingless object over the Netherlands, a Turkish rocket report, a Moscow sighting, and George Gorman's 1 October 1948 Fargo encounter.
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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## CONFIDENTIAL On 2 Aug 48 at approx 1945 a round object which appeared to be about 20 to 30 ft in diameter was observed moving in southerly direction from the north over center of Columbus. Had constant grey-black perimeter with a transparent center. The blue sky could be observed through this grey-black perimeter while it moved at a constant, slow speed of about 15 MPH. It made no noise of any kind. Once it hesitated in its movements and a thin trail of smoke issued from the opposite direction of travel. The smoke soon disappeared and was not seen again during the 10 to 15 minutes object was visible to the observer. The object changed position - but not direction of travel - three times. When first seen, it evidently presented a side view which was a parallelogram in shape. (See). Slowly its position altered and it became circular in form, only to revert after a time to its original form. The altitude was judged to be some 1500 to 2000 ft above ground. Agent's Note: Sounders drew the following sketches Fourth Third Second First The above drawings constitute four positions of one phase. The object passed thru three of these phases during the 15 minute period.
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. 178 pages are in the text index: search them above, or from the library's search.