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This 92-page Project Blue Book file, released through The Black Vault, covers the 7 January 1948 sighting at Godman Field, Fort Knox, Kentucky. It holds control tower witness reports, a record of the P-51 pursuit led by Captain Thomas Mantell, AMC requests for theodolite readings and weather data, and astronomical tables for Venus and the Moon. One analysis concludes the object was not Venus and calls the sighting unexplained. The file also includes a 1964 letter to the Simpson County coroner about Mantell's death.
Read from the scan by GLM-OCR; expect the odd misread word.
SUBJECT: Unidentified Aerial Object
5 JAN 48 LOW TILL 1130C BASES VRBL 2000 TO 3200FT THEN AT 1230C HIGH TO 8/10 TO 10/10 11000 FT TO 15000 FT. VISBY VRBL FROM 3 TO 6 MILES IN SMOKE AND HAZE.
6 JAN 48 8-10/10 THIS IN MORNING TILL 0730 BASES 10000 TO 15000 FT AT 0730 TILL 0930 CIG VRBL FROM 8000 TO 1300 FT THEN FROM 0930 ON TILL END OF DAY. VSBY VRBL 4 TO 15 MI WITH HAZE IN AM NOTHING IN P.M.
7 JAN 48 HOURLY SEQUENCE FOR THE 7 JANUARY 1948
FROM THE WBAN 10-A
ALL TIMES IN GST
0030 $\textcircled{1}$6H 244/32/21→4/022'/3000 46
0130 $\textcircled{1}$6H 244/32/20→4/022
0230 $\textcircled{1}$6H 247/29/20→4/023
0330 $\textcircled{1}$6H 247/29/20→2/023/001
0430 $\textcircled{1}$6H 247/27/20→2/023
0530 $\textcircled{1}$6H 247/27/21C023
0630 $\textcircled{1}$6H 244/27/19/C/021
0730 $\textcircled{1}$3HK 247/28/22/C/022/99640 99980
3 AC E120
0830 E80$\textcircled{1}$8 251/28/22→4/023/99631 99980
10 AC E80
0930 E80$\textcircled{1}$8 251/31/30/C/023/303 0309/99990
9 AC E80
1030 E80$\textcircled{1}$8 240/38/28→4/021/ RMREPS GLR 25
MI W DKY 0900C/99990 99930 9 AC E 80
1130 $\textcircled{1}$8 234/41/37→14/019/99990 99970
6 AC E100
1230 $\textcircled{1}$8 230/48/42^8/015/91200 0069/2 27
7 CS E 250
1330 $\textcircled{1}$8 203/49/40→12/010/9999099930
3AC E100 6 CS E250
1430 $\textcircled{1}$8 193/49/34^12/007/99990 99930
3AC E100 6 CS E250
1530 $\textcircled{1}$12 193/49/29↑^8/007/605 26942/99990
5AC E140 5 CS E240
1630 $\textcircled{1}$10 207/48/23↑^8/011/99990 99730
6AC E140 4 CS E230
1730 $\textcircled{1}$7 183/45/22^4/005 .6AC E140 4 CS E230
1830 $\textcircled{1}$7 176/42/25^8/004/60400 026942 49
6AC E140 4 CS E230
1930 $\textcircled{1}$7 190/41/29T ^5/006 6AC E140 4CS E230
2030 $\textcircled{1}$6H 193/39/28^2/007 6AC E140 4CS E230
2130 $\textcircled{1}$6H 193/39/29^3/007/406 00002/0 Document, cited by the archive. 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. 93 pages are in the text index: search them above, or from the library's search.