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.
U.S. Air Force Technical Information Sheet Question Punched Card Column Code Description 38 39 40 Hour 41 Angle 42* 43* Angle of Elevation of the Sun 44 45 46 47* Group Classification 48 Sun 49 Bearing 50 Angle 51* 5. 52* Time Units 53 Duration of Observation 54 55* Group Classification 15. 56* How Observed 16a. 57* Sound 16b. 58* Object Color 16b.17. 59* Light Color Physical 60* Color Group Classification 19. 61* Number 11a.11b.39. 62* Speed 17.18.24. 63* Shape Description 11f.21.22.24. 64* Size 10.11e. 65* Light Brightness 5.11.17.20. 66* Angular Velocity Motion 33. 67* Angular Acceleration 29.31.1. 68* Appearance Bearing 23.30.31.2. 69* Disappearance Bearing 31.32. 70* Initial Elevation 71* Final Elevation 72* Orientation 73* Maneuvers 41. 74* Observer Occupation 75* Observer Rating Observer 76* Report Rating 77* Reliability Group Classification 78* Final Identification \* Denotes that separate code key is needed.
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.