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CIA-UAP-015, Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)

Central Intelligence Agency · 312 pages · text from the file's own layer

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.

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Number Per Cent Nunlbef Pe, Cent Number Per Cent Number Per Cent
Enlaahon Cert•n Doubtful Total Certain Doubtful Total trtlin Doubtful Total Certain Doubtful Total ertain Ooulltful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total
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Totll
Numbtr Per Cent Number Per Cmt Per Cent Nuober
Evaluahon Certain ' Doubtful Total Certain Doubtful Total Certain Domtful Total Certain Doubtful Total ertain Doubtful Total Celllin Doub11u1 Total Cerllin Doublfu Total Certain Doubtful Total
0-Bllloon 2. I '3 3. 3 /1,2 l,M p 2-.
I-Astronomical I I 1 lb,1' /tJ.() ;/Ml O I! 11 0. 0 n.O l)n z. .:z..
I O I t'O.O /),I) /tJ,I) 0 0 {) 0. 0 0-0 ti.() 4 2 6 /1,,.7 f."3 :i.,~ I I
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:4-Buds ll I I tJ.P ,.,, 11.2 0 t> ()
Hloud~ Dus~ etc 0 ?' 0 ta0 DO 1,0 0 tJ O IJ.I) D.C P.O D fJ O tJ.o "·" l.o p 0 () n.n tJ.o /J.()
:s-1nsuff1c.lnfo. .1 C 3 31.1 ,.,.., 11.P o r, o ac 121' atJ 0 t) 0 o.c /111 /)I) I'> I ltJ,0 "-" /I},/)
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I Total
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I Number Percent
- PerCt11I
- Per Cent Nuober Per Cent
EYaluation Certain Doubtful Total Certain -Ill I Total Certain lloulllful Total Cerllio Doubllul Total ertain Doubtful Total Celllin lloulllfu1 Total Cerllin Doublfu Total Cerlli1I Doubtful Total
0-Balloon 0 1 2 /1.0 13.3 .33.J 3 7 l, 1,0 /{() .:/0.0 I 2 J .f.1 If.I /7, 'l 'l 0 ~ JQS o. () /ti..>
1-ASbunollical 0 I I O.b 1,.1 /{.? I 3 4 S. o /5. 0 21>.rJ 7 I R 1/1.1 .J. '1 1/-7.J 'lo~cal I () I /(7 "·P lo. n p (i ()n t1 t n.n (I 0 [) 0.0 i?,D 0.0 0 0 .0 0.fl ~!} I'll'.
S.Unkno• 0 I) () M {).I) (J.P. '.2 0 '} ID 0 0.J /I.() n /J 0 o.o {1.p 0.Q ,t; /) J' 7L3 /J.t 126. 3
9-0l!ler Cl I I {),{) It 7 /67 a 0 0 D./J {)O /J.IJ I tJ . I ).9 (l.t) u 1 0 :2. /O.f /J.,J !OS
Total './ '1 ' 33. 3 '' 7 /00. 13 7 A,/) ~o 35.0 /D(), I 'f 3 /7 n,, 17.t /di. I'; ~ If 7J.7 2., ~ m,
125

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Case file, from the pursue collection. The PDF is mirrored here; the original link is above. 312 pages are in the text index: search them above, or from the library's search.