Documents / FOIA release
This CIA-released copy of Project Blue Book Special Report No. 14 is dated 5 May 1955 and comes from the Air Technical Intelligence Center at Wright-Patterson Air Force Base. It is a statistical analysis of about 4,000 unidentified aerial object reports from 1947 through 1952, coded onto IBM punched cards with the help of a panel of scientists. The report concludes that such objects were highly unlikely to be technological developments beyond present-day scientific knowledge. It also found no valid evidence of physical matter.
## CODE 43 OBSERVATION METHOD X Variable 0 Naked eye 1 Eye glasses 2 Window 3 Windshield 4 Binocular 5 Telescope 6 Theodolite 7 Radar 8 Photographic 9 Other X Variable ## CODE 44 SOUND 0 Motors 1 Jet or rockets 2 Explosion 3 Unlike aircraft 4 Hiss, swishing, whining 5 Rumbling 6 Humming or buzzing 7 None 8 Not stated 9 Other ## CODE 45 COLOR X Variable 0 Metallic 1 Light-glow-luminous 2 Red 3 Orange 4 Yellow 6 Blue 7 Violet 8 Black 9 White ## CODE 46 NUMBER 0-1 1-2 2-3 3-4 4-5 5-6 6-7-10 7-11-20 8-20-30 9-31 or more ## CODE 48 SPEED ## X Variable 9 Other 0 Hovering, stationary 1 Less than 100 m.p.h. 2 100-400 m.p.h. 3 More than 400 m.p.h. 4 Meteor like 5 Not stated X Variable Y 0 White 1 Black 2 Grey 3 Red 4 Orange 5 Yellow 6 Green 7 Blue 8 Violet 9 Other ## CODE 47 LIGHT-COLOR 9 Other ## CODE 49 SHAPE ## X Variable Y 0 Ellipse 1 Rocket 2 Conventional aircraft 3 Unconventional aircraft 4 Meteor, comet 5 Lenticular 6 Conical 7 Tear drop 8 Flame, tails, fire 9 Other
FOIA release, from the cia-readingroom collection. 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. 312 pages are in the text index: search them above, or from the library's search.