Documents / Case file
This CIA archives copy, released in 2026, holds Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects). The Air Technical Intelligence Center at Wright-Patterson Air Force Base issued it on 5 May 1955. The study reduced about 4,000 sighting reports from 1947 to 1952 to IBM punched cards, with 3,201 cases charted, and applied chi square tests to compare known and unknown sightings. It concludes that it is highly improbable the reports represent technological developments beyond present-day scientific knowledge.
From the source:Release of 2026-06-12 This is the USAF Project Blue Book with a CIA cover sheet stating the document is "Official Record Copy." With the exception of the handwritten note on the first page, the content of this document has been available on CIA's public website.
CODE 56 DISAPPEARANCE BEARING X - Disappeared suddenly y 0-N l - NE 2 - E 3 - SE 4-S 5 - SW 6-W 7 - NW 8 9 CODE 61 OBJECT ORIENTATION Apparent inclination of principal ..!!.!,s of object from horizontal X •Variable t 0 +90 to 60 l ..60 to 30 2 .+30 to 10 3 +10 to O 4 O 5 0 to -10 6 -10 to -30 7 -JO to -60 8 -60 to -90 9 CODE 65 SERVICE X y 0 Army 1 Navy 2 Marine .3 Air Force 4 Coast Guard 5 Merchant 6 Commercial Air 7 CAA 8 Gov•t. Contractor 9 Other CODE 57-58 ELEVATION WITH RESPECT TO GROUND. DEGREES X y 0 l 2 .3 4 5 6 7 8 9 Initi1l ~ Variable X Variable y 0-9 0 0-9 10-19 l 10-19 20-29 2 20-29 .30-.39 .3 .30-.39 40-49 4 40-49 50-59 5 50-59 60-69 6 60-69 70-79 7 70-79 80-89 8 80-89 9 QODE 62-63-64 CIVILIAN OCCUPATION Dictionary of Occupational Titles, Vol. II, 2nd Edition, PP• XIX-XXVI. u.s. Department of Labor, Bureau of Employment Security. U.S. Government Printing Office, Washington, D. C., 1949. See PP• XIX-XXVI. CODE 66 DUTY X y 0 Pilot 1 Weather tech. 2 Radar tech. 3 Tower op. 4 Balloon obs. 5 Tech. spec. 6 Guards, lookouts ? Ground or deck crews 8 Navig. or bombardier 9 Other 294 I I I I I I I I I I I I I I I I I I I I I I
Case file, from the pursue collection. The PDF is mirrored here; the original link is under it. 312 pages are in the text index: search them above, or from the library's search.