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This Project Blue Book file, released through The Black Vault, collects US Air Force records from 1950 to 1959 on the movie film Nicholas Mariana shot at Great Falls, Montana on 15 August 1950. It includes the OSI interview report, letters about borrowing and copying the film, and a 1956 Douglas Aircraft analysis. Blue Book's own findings were not consistent: one letter lists the cause as unknown, while later memos conclude the objects were probably two F-94 jets.
“Cooper”6 pages
A recent analysis of the film, made by Air Force photo specialists totally unaware of the previous history of this case, yielded the opinion that the bright spots of light on the film were bird reflections in the strong sunlight. The unanimity of opinion present in all evaluations made in this case leaves little reasonable doubt that the UFOs in the film were indeed seagulls. 2. Attached is a copy of this memo to be given to Mr. M. A. Monts in the Air Force Press Room in the Pentagon. JOHN G. ERIKSEN Colonel, USAF Deputy Commander
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. 114 pages are in the text index: search them above, or from the library's search.