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.

Open the PDF at page 167 Original source ↗

“Roe”1 page

  • p. 190 …S £'0/? 'S t r/0fl/ Of- roe M0/ur*/i/as EvaMnon 0-BIIIOM l…
Evaluation
0- Balloon
l-Aslmnonical
J-Auctaft
3-Li(ht Phenom.
4-Birdi
5-CloudJ, Dust, e t c
S-IMutfic Into.
7-Psyd»lo|ical
S-Unkmvm
9-OtiMi .
Total
Number
Certain
J
Z6
/
/
0
2_
2-2.
AS~/
Doubtful
. r
3U-
21
3
1
0
/ y
Total
/
/20
//
1
/ /
?•
72
PerCent
Certain
AL
1.7
0.5
AS
A.O
5.0
10.0
-12
6M
Doubtful
23
/SS
?J
/•
0.0
0.0
0.0
/u
/•D
70.if
Doubtful
3,1
Z5-.3
/O.J.
0.0
A.O
0-0
o.o0.0
0.0
0.0
7-9-6
Total
6.2-
2-6.S
/,0
A.C
0.0
6.1
00
A6.3
A.0
AAfi.
AA-Jfl S
Number
lertan
_A
2=1
30
/
/
O
/ /
£2
706
Doubtful
7
f
/0
2_
0
/
0
r
Total
/ /
72-
60
z.
I
/ /
/
2-7
f
ASA
Per Cent
Certain
xs
/4.3
/&6
AL
A&£_
^2S_
6S7
Doubtful
#3
r.6
Af.6
A6
/,7-
06
0.0
3.A
34.2
Total
6-f
272
/•2
0.6
/•2
17
A6-t
/00.
3/-6P J\
Number
Certain
/A
22
P
6?
?
2-
33-
/
17
Doubtful
AO
//
2-0
/0
A
3?
Total
/ f
¥-2
2-
0)
f
2-
32-
3
72£
ectMcs
Percent
Certain
6J.
7.9
/7S
0.0
2. if
0.0
JZL
2St
A?
69,0
Doubtful
71
11
/ .6
A>.0
AO
A.0
00
f.6
7/.0
Total
/4.Z
• / / /
33.il
A 6
3.2
A.0
7,A
/, 6
?.#
Evaluation
0-Balloon
1-Astranmical
2-Airaaft
3-LiihlPhemm.
4-Birds
5-Clouds. Dust, e t c
6-lnsuHic Info.
7-PsycnolOfiul
8-Unknow
(Other
Total
Numta
Certain
U0
3
O
u-
22
2-AA
Doubtfu
3*7
3
A
2
3
0
0
A02-
Total
76
?3
7
3
At
7
77
7
Percent
Certain
J3-2.
1,0
MZ
2.0
A3
0.0
S~.9
A3
3.0
U3
Doubttu
Ml
A6.S
A.O
A. A
A.O
A.O
A.O_
3S.7
Total
P-f,A
30.7
0.3
A.o
?•?
£3.
2S.H
30
/OP.
6SAP M//VL>TJTS
Number
Certain
f3
2-2-
3f
/3
0
£7
JL
/A
122
Doubtful
37
33
6
c
/
0
0
A
?At
Total
ft
6¥
/?
O
2-
27
7
si
/J
Percent
Certain
HI7,0
JA
M.l
0.0
0.3
IS
2JL
/U
70.3
Doubtful
1-7
00
03
A.O
0.0
0.0
A.9
H7
Total
2-%J
//•&
^0.2.
6.0
0.0
0.6
fS
2.2.
I1.lt
H-.l
/0Of
Ptz/Fp 3
Number
;ertain
?
/
2
/
7
JL
2L
7
/ / 7
Doubtful
/Z-
/3
7
2-
0
0
A
/
0
,7
37
Total
37
36
/r3
/
7
£^
AA
/fS
Percent
Certain
AO
/4>%
JJ\
13
0.6
US
2.6
2J2.
4,5"
7£S
Doubtful
7,7
14
A?
0.0
0.0
A.0
0.6
0.D
/.*/
2Jf;5~
Total
7-32
f-7
/•?
1.3
0.6
3Z
i.Af
AlAor SrAre-0
Hunter
Certain
uU-2.
/
/
70
2.
73
/a.
2ZA
Doubtfu
20
S3
27
• 0
0
0
1
0
63
Toy
$ • /
i~?
67
/)-
/
/
3
71
3Uf
PerCent
Certain
Id.
0.3
A3
2J>.3
0.
2.J.7.
3.S~
V.7
Doubtful
s-.f
p.t
A3
0.0
O.0
0.1
0.
0.0
A.I
A13
Total
1/7.3-
2£>.O
/•Z
0.3
0-3
2-03
A.9
2'-2.
3.?
AA0.
• v f ;
160

Cited by

Cases discussed

About this file

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