Documents / Report

Project Blue Book Special Report (second copy)

Internet Archive · 309 pages · text from the file's own layer

This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.

  • p. 245 …P _/) - 7 P P 3 ?% ToUl •6 'r? g_ 0 70 '0 5L3fy Per Cent . Certain…
  • p. 256 …c Doubtful 2, g- 0 0 ?• /g >//r/ ?G//> Total f // / /0 0 & ? 6/ /P6 S…
  • p. 258 …9 0 $ / 'i a 2£ -L 43 r/?g(. Certain / / f2> 2. I? ?; • 2 V 1…
Eviration
0-Balloon
1-Astjono«iol
2-AircraR
3-Light Phenom.
4-Binb ,
5-Clouds, Dust, etc
frlnnffic Info.
7-Psydnlo|ioi
J-Unknown
M t h e f
Total
Number
Certain
g
,/
24
/
O
17
__&_
$3
Doubtful
7
£_
/
£
£
£_
Q_
£
2.2,
Total
ff?
/7
2,
0
0
17
/ /
g-
/Of
r-r A/
'£
'IF
vr* 0
H\ Cent
Doubtful
9$
9*
/4J
00
0.0
0^P\
0.0
0./?
l¥.¥
Total
2/-3
2i-2
2fCk
fi>
0.0
/•(•
/ / • *
/00.
c
1ST /(
T//V
0/V
..7?/? .
h/.4S////r 6 r~/?/>/
Nunbci
Certain
/&
/ $ •
20
0
/0
39
/03
Doubtlul
g
1
2^
0
_£_
_£_
ff
4s
Total
23
zz
2,
/
_£_
/0
3?
, f
/¥fr
Certain
ffl-3
tf.3
0.0
07
as?
/ « • $
00
z/
•fas
erCent
Doubtful
ȴ
f-¥
00
ao
2?.
/• ?,
•3 £
2 i?
3¥C
Total

/ 2
;'- 5
2 6
s¥.£
C rtfc~/9 S
yi*£n
Percent
Certain
7-9
MS
79
0.0
//..4
3.0
20.7
#•4
ft 7
Doubtful

Doubtfu
3
r
0
0
0
z,
0
2./
Total
2/
//
22
0
0
0
3
ft
3
93
P e r c e n t
Certain
ff t
t i .
/a./
0.0
0.0
0.0
\/i,/
/./
/?.¥
Doubtfu
~2JL
00
00
0.0
00
2..2,
00
Total
HA
/It
31A
00
0,0
00
16./
73
/?,¥
3.3
too,'
r,
±326.
Certain
3
a
/)
0
y
¥
27
Number
Doubtful
3
0
0
0
0
0
0
Total
(>
/4
0
/
0
¥
0f
~fi/r/
Certain
4" 3
J2.j>
0.0
0.0
0,0
/0.S-
?•£
/ / /
- 0
P e t C e n t
Doubtful
£3
79
(3 ?.
0.0
00
?,ff
00
0-0
0.0
00
ZZ.f
£7 S/6//T/A16 V 'A/ 7/SF #77?6 /C Fr)S
Total
3L.9
2.6
0.0
t.i.
ft. 4
0-0
£.6
/00.
Number
Certain Doubtful Total
P e r C e n t
Certain Doubtful Total
Number
Certain Doubtfu Total
PerCoit
Certain Doubtlul Total
252

Cases discussed

About this file

Report, cited by the archive. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.