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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.
Read from the scan by GLM-OCR; expect the odd misread word.
# UNCLASSIFIED ## PART II 1. 15 august 1950 2. Between 1125 and 1130 Mount in Standard Time 3. a. Great Falls, Montana 4. Two objects, entrail, approximately fifty yards apart. 5. The U.S. Weather Bureau, Core Field, Great Falls, Montana, which keeps a record of the observable celestial phenomena or planets reports that there were no such phenomena observable on 15 August 1950. a. Approximately three-quarters of a mile laterally in a westerly direction. 5. The angle of elevation from the horizon was about thirty-five degrees. c. The altitude was approximately ten thousand feet. 7. Mr. states object was in sight to him a total of about twenty seconds and about seven seconds to his secretary, Miss 8. Mr. Mariana states that the appearance of the object was: a. Of a bright clean aluminum surface. b. Disc shape--apparently had depth c. Objects appeared to be of metal material d. According to observer, objects were about fifty feet in diameter and three feet in depth. NOTE: Observer has had occasion to frequently observe USAF C-54's in flight in the local area and states the objects had a diameter about three-quarters of the wing span of a C-54 and a depth of about one-third of the depth of a C-54 when viewed from the side. 9. Direction of flight: Objects were moving in a southerly direction. 10. Tactics or maneuvers: Movements of objects were horizontal but slightly erratic as to speed. 11. No evidence of exhaust. 12. No clouds were observable on that date. 13. No lights were observed as being attached to objects. 11. a. No wings observed b. No aerodynamic list of fuselage observed. c. No. vertical jet observed. d. Objects, according to observer, definitely had an appearance of a spinning motion; however no rotating cylinder or cone was observed. e. No. aerostatic lifting devices were attached to objects. 15. a. No propeller or jet device observed b. No rotor observed. c. No aerodynamic vanes observed. 6. No visible exhaust or jet openings. 16. a. No fins observed. b. No stabilizers observed. 17. Do air ducts observed. 16. Speed estimated by observer to be approximately two hundred mph. 19. No sound; objects had a purported "whoosh" sound UNCLASSIFIED DOWNGRADED AT 3 YEAR INTERVALS: DECLASSIFIED AFTER 12 YEARS. DOD DIR 5200.10
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. 114 pages are in the text index: search them above, or from the library's search.