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This Project Blue Book case file, released through The Black Vault, collects records on the 24 July 1948 sighting by two Eastern Airlines pilots of a wingless object about 20 miles southwest of Montgomery, Alabama. It contains teletype replies from military bases reporting no aircraft movements, a 1948 Project Sign special investigation report with an interview of a Robins Air Force Base witness, and a December 1948 intelligence report. It also includes newspaper extracts, a Harvard College Observatory letter and Hynek's Project Grudge evaluation index.
“The Advance”3 pages
1. Date 24 July 48
2. Time 0230
3. Location Near Blackstone, Va., enroute to Raleigh-Durham
4. Name of observer Louis Feldvary
5. Occupation of observer Pilot
6. Address of observer LGA
7. Placo of observation Air - near Blackstone, Va.
8. Number of objects only the trail seen
9. Distance of object from observer N/S
10. Time in sight N/S
11. Altitude N/5
12. Speed terrific speed
13. Direction of flight $ 2 3 0^{\circ} $
14. Tactics Trail covered an $ 8 0^{\circ} $ to $ 9 0^{\circ} $ arc laterally
15. Sound N/S
16. Size N/S
17. Color N/S
Only trial seen - object not seen
19. Odor detected N/S
21. Exhaust trails Seemed to be a jet or rocket trail
18. Shapo N73
20. Apparent construction N/S
22. Weather conditions at 0230 at Blackstone: 0/70 0 4GF 112/73/72/wsw 5/967. Greensboro and Raleigh-Durham 0/15 plus Effect on clouds N/S
21. Sketches or photographs None
25. Nanner of disappearance N/S
25. Remarks: (over) Document, cited by the archive. 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. 162 pages are in the text index: search them above, or from the library's search.