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.
“Hill”8 pages
## . CONFIDENTIAL
Shortly after checking Blackstone, at approx 0230, a trail was picked up that appeared to be a jet or rocket trail. The object leaving the trail was traveling at terrific speed in a southwesterly direction and as nearly as they could estimate they calculated the degree of travel as $ 2 3 0^{\circ} $
They were on a heading at the time of 215 $ ^{\circ} $ . The jet or rocket trail at no time crossed their flight path. It was on the distant western horizon at approx 20 $ ^{\circ} $ above the horizon. The trail covered an 80 $ ^{\circ} $ to 90 $ ^{\circ} $ arc laterally.
NOTE: There is a 15 minute difference in time f/this sighting (0230) to the rocket sighting at 0245 in Atlanta some 400 to 475 miles distant.
NOTE: The above time (0230) tallies with another sighting by another pilot in the vicinity of Blackstone, Va. who saw a very unusual meteor that appeared to be on a bearing of about $ 2 1 0^{\circ} $ from them traveling in a southerly direction above but close to the horizon.
CONFIDENTIAL Official release, from the pursue collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 178 pages are in the text index: search them above, or from the library's search.