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.
“Gray”2 pages
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS Incident # 158 1. Date 1 Aug 4g 2. Time 2:00 P.M. 3. Location Groveport, Ohio 4. Name of observer Harold A. Yantis 5. Occupation of observer Student, 6. Address of observer 25 West Hinman Ave. 7. Place of observation 1 mile west of Groveport, Ohio 8. Number of objects 1 9. Distance of object from observer N/S 10. Timo in sight N/S 11. Altitude very high Speed N/S 13. Direction of flight in westerly direction against a light wind Tactics N/S - just exhaust visible - smoke pattern dark & very large dispersed rapidly and appeared again as wide streak a mile or so in length Sound No sound twisted from wide to narrow streak Size N/S - object not seen Color N/S - object not seen Shape Just a streak observed Odor detected N/S Apparent construction 1/8x An exhaust trail (smoke) Exhaust trails Appeared as black cloud with no definite shape but looked like an anti-aircraft shell a few seconds after it exploded Weather conditions Few white clouds - but clear Effect on clouds black cloud silhouetted among them that moved Sketches or photographs 3 figs. Manner of disappearance N/S Romarks: (over) 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.