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This Project Blue Book case file, digitized by the Internet Archive, covers Incident 144: two Eastern Airlines pilots reported that a wingless, cigar-shaped object with a flaming exhaust passed their DC-3 about 20 miles southwest of Montgomery, Alabama, on 24 July 1948. The file includes an OSI interview with a Robins Air Force Base employee who saw a similar object, negative aircraft traffic reports from many bases, and later correspondence. A December 1948 intelligence report found fairly consistent descriptions across four related sightings.
“The Wash”11 pages
Regional Administrator Civil Aeronautics Administration Chicago Orchard Airport Park Ridge. Illinois ATTN: 3-295 This Command is desirous of obtaining all flight schedules of commercial aircraft flown in the Mississippi, Alabama, Tennessee, North Carolina, South Carolina, Georgia and Florida areas, on 23 and 24 July 1948, the type of aircraft flown, time and place of departure, and the time and place of destination. Attention has been directed to your office as being the most qualified to furnish this Command with the above information. SUBJECT: Project "SIGN" Gentlemen: Any cooperation you may give will be greatly appreciated. Correspondence should be marked for the attention of NC1AXD-3 as indicated in the upper left-hand corner of this letter. This facilitates prompt handling of your communication. Yours very truly W. R. CLINGERMAN Colonel, USAF Chief, Technical Intelligence Division Intelligence Department
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. 161 pages are in the text index: search them above, or from the library's search.