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This Project Blue Book file, released through The Black Vault, covers the RB-47 encounter of 17 July 1957 over Mississippi, Louisiana, Texas and Oklahoma. It includes the record card, which lists the sighting as identified as American Airlines flight 655, and Air Defense Command correspondence that carried the sighting as unknown. There is also Major Lewis D. Chase's observer data sheet and an electronic analysis finding it difficult to conclude nothing was present. James McDonald's reconstructed account is included, along with a CAA letter about airliner incidents.
“Mineral Wells”2 pages
Read from the scan by GLM-OCR; expect the odd misread word.
PROJECT 10073 RECORD CARD 1. DATE 17 July 1957 2. LOCATION Forbes AFB, Kansas/Oklahoma City, Oklahoma/Ft Worth, Tex 12. CONCLUSIONS □ Was Balloon □ Probably Balloon □ Possibly Balloon □ Was Aircraft □ Probably Aircraft □ Possibly Aircraft □ Was Astronomical □ Probably Astronomical □ Possibly Astronomical □ Other □ Insufficient Data for Evaluation □ Unknown 3. DATE-TIME GROUP 1st sighting Local 0350 AM GMT 17/1050Z 4. TYPE OF OBSERVATION □ Ground-Visual □ Ground-Radar □ Air-Visual Air-Intercept Radar 5. PHOTOS □ Yes □ No 6. SOURCE USAF A/C Crew 7. LENGTH OF OBSERVATION not given 8. NUMBER OF OBJECTS one 9. COURSE not given 10. BRIEF SUMMARY OF SIGHTING A blue light was seen in sky that stayed with a/c for 420 NM. Object was picked up by B-47 radar but could not be seen by ground radar. 11. COMMENTS Identified as American Airlines flight 655. See article by Dr. James E MacDonald-Astronautics and Aeronautics Summer (1971)
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. 57 pages are in the text index: search them above, or from the library's search.