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
Read from the scan by GLM-OCR; expect the odd misread word.
## ?
CHECK-LIST - UNIDENTIFIED FLYING OBJECTS
1. Date 20060601948 28 May 1948
Incident: 134
2. Time 1500 hours (Eastern Daylight Saving Time)
3. Location Selfridge Fld, Mt. Clemens, Mich MacDill AF Base approx 6 miles east of Monroe, Michigan
4. Name of observer Lt Kokolonis
5. Occupation of observer 1st Lt, Corps of Engineers
6. Address of observer Selfridge Field
7. Place of observation 6 miles east of Monroe, Michigan
8. Number of objects 5 - three at first - two later
9. Distance of object from observer 2 miles to left (first 3) 2-1/2 miles to left ( two)
10. Time in sight
11. Altitude 8,000 +
(?)
see sketch
12. Speed over 500 MPH
13. Direction of flight seven o'clock position to 35$ ^{\circ}$ heading north. 35$ ^{\circ}$ heading from MacDill to Selfridge making abrupt turn to right (pilot's left) 14. Tactics Maintained nose-up attitude. Made abrupt turns.
15. Sound None
16. Size 300 to 400 ft approx. - size of lake freighters(500 ft)
17. Color silvery-gold color
18. Shape disc
19. Odor detected N/S
20. Apparent construction N/S
21. Exhaust trails none
22. Weather conditions
23. Effect on clouds
Clear - visibility: eight miles High overcast at 18,000 ft w/thin stratus layer very broken at 8,000 N/S
24. Sketches or photographs Sketoh showing approx positions
25. Manner of disappearance lost in haze at 7 o'clock position to pilot
26. Remarks Objects maintained smooth track thru sky, and flew in line of stern stepped up. In second sighting the second object flew about 50 feet higher than the first. All had hazy or fuzzy outline. 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.