Documents / Report

U.S. Air Force Analysis of Flying Objects in the United States, 101-172

U.S. Department of War · 210 pages · text by OCR

This declassified U.S. Air Force compilation of unidentified flying object incidents 101 to 172 contains check-list reports from 1948 and 1945. Incident 101 covers the 18 February 1948 sky explosion over Norcatur, Kansas, with letters from Norman G. Markham suggesting a lunar spacecraft, Dr. Lincoln LaPaz's reply judging it a genuine meteorite fall, and witness statements. The final incident, 172, records George F. Gorman's 27 minute F-51 pursuit of a white light over Fargo on 1 October 1948, corroborated by tower controllers and Dr. Cannon.

From the source:Release of 2026-06-12 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.

Open the PDF at page 117 Original source ↗

“Nevers”7 pages

  • p. 10 …These reports have never been seriously considered by science, which in general ignores them. However, according…
  • p. 81 …Col Siegmund was never questioned but some sort of investigation obviously should be made in lieu…
  • p. 95 …a jet aircraft that I perhaps had never seen - because we as civilians know very little…
  • p. 165 …Another car stopped near them with two occupants who claimed that they had never witnessed anything…
  • p. 169 …many vapor trails from planes but had never observed anything like this. He states: "It was…
  • p. 182 …a definite sharp outline - something I had never seen before. At first I thought it might…
  • p. 195 …this aircraft on Channel "B" and "C", "VHF" but acknowledgment of his transmission was never received.
Incidort # 139

1. Date 9 Jul 48

2. Timo 2147

3. Location North end of Usborn, Ohio

14. Name of observer Clarence Glasebrook, 1st Lt., USAT, Hq AMC (MCIAXO-4)

5. Occupation of observer ATI Investigator

6. Address of observer Hq AAC (NCIAX-4)

7. Place of observation ground

8. Number of objects one

9. Distance of object from observer N/S

10. Timo in sight Appeared 3 times each time being 1-2 second duration

11. altitude 3000 to 4000 feet

12. Spcod between 500 & 600

13. Direction of flight west (east to west)

11. Tactics Made intermittent appearances at regulated intervals

15. Sound None

16. Sizo could not be estimated

17. Color pale yellowish white (luminous)

18. Shapo N/S

19. Odor detected N/S

20. Apparent construction N/S

21. Exhaust trails None

22. Weather conditions Clear w/quarter moon in the East-Southeast.

23. Effect on clouds N/S

24. Skotches or photographs None

25. Mannor of disappearance Suddenly at angle of approx. 70° to horizon in front of observer who was looking north

26. Romarks: Lt. Glasebrook was a reconnaissance pilot in World War II.

Cases discussed

About this file

Report, 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. 210 pages are in the text index: search them above, or from the library's search.