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
Witnesses were attracted by sound of fighter aircraft in vicinity. They started searching the sky for the aircraft and sighted the objects. When first sighted, the witnesses thought the objects might be weather balloons. However, when they accelerated so rapidly in a northerly heading, they determined the objects could not be balloons. They were in a trail formation on a North-South line, and moved so rapidly they were out of sight within a few seconds. From original sighting in the stationary position to their disappearance, a period of approximately two (2) minutes elapsed, on which the objects were in a stationary position for approximately one (1) minute.
NOTE: Wind at 20,000 ft from $ 3 4 0^{\circ} $ at 10 knots per hour (1230 EST Rpt) Wind at 20,000 ft $ 3 2^{\circ} $ at 13 knots per hour mt (1830 EST Rpt)
NOTE: Nearest weather station releasing balloons is Spartanburg, S. C. One black balloon was released at 1230 EST.
CONFIDENTIAL 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.