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
Fifty to 60 shiny objects were seen moving at a speed faster than any known aircraft on an Easterly heading at an extremely high altitude. For the most part these objects traveled in a straight line altho some of them zig-zagged slightly. No sound was heard. Some objects seemed to have a silvery tail which might have been exhaust. These objects could not have been weather balloons as only one balloon was released by the Memphis Weather Bureau that day. Witnesses thought they had seen a meteor; however subsequent investigation seemed to preclude this possibility. See Supp II to Trip Report to Memphis - Visit with Dr. Paul Herget of the Observatory of Cincinnati, Ohio, in which Dr. Herget expressed serious doubt that the 50 or more objects observed 7 May 48 in Memphis were meteors. He, was, however unable to offer any explanation as to a possible identification of the objects. Dr. Hynak of OSU and Dr. Lincoln LaPaz are to be consulted about the possibility of these being a meteor shower. Witness of this incident were: Mr. F. J. Kaiser, salesman 251 W. Waldorf Ave., Memphis Mrs F. J. Kaiser, housewife 251 W. Waldorf Ave., Memphis, Tenn. RESTRICTED
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.