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…
/?££• SS6ffr/A/6 &?£ £6>£j4fr0A^ _0/? S/6/VT//1/6 A^l/Z-fA^jt J>£ j!?jfJ£d.S'S /!^T .S^T^T/
Entobon
0- Balloon
l-AUmoaical
2-Aircrafl
3-Lifht Ptieno*.
4-Binh
5-Cfouds, Oust etc
(•lusuflic Into.
7-Psydiolofical
l I M a o *
Miner
Totaf
£~S£?0/U0S J£ C£SS
, Nunber
Certain
c
0
6
0
0
P
O
0
0.
/
Doubtful
0>
£)
1
P
a
£>
P>
a
(
Total
0
/
/
0
P
P
a
0
PerCtnl
Certain
JO
J£
0(,
ao
sat
Doubtful
00
OP
ro,o
$o
DP
0(7
0?
GO
se.o
ToW
ao
rod
ao
OP
0,0
0,0
ce
QO
/Ob
Nnoer
Certain Doubtful
A
Total
o
Per C a t
Certain
0,
Doubtful Total
//-S0 S&C0/V0S
Nuaber
lertain
1
0
J
C
0
p
Doubtful
0
0
0
e>
0
P
0
&
$
- P>
Total
/
0
/
P
V
&
Q_
0
0
p
Percent
Certain
JM
QO
£0-6
0.0
O.0
00
Uo
i l l
ao
o.o
Doubtful
O.O
0.0
O.C
o.o
ao
to
0.0
ao
0.0
Total
SW
JO
06
O.0
00
P.0
O.t
0.0
ao
/oo,
Nuaber
Certain
fc
0
0
o
In
o
o
o0
Q
/
Doubtful
P
a
p
0
9
0
0
0
•o
Total
I)
0
p
0
/
0
p
o
/
PerCait
Certain
QO
o.p
00
0.0
mo
00
no
_M
JA
JA
/0O.£>
Doubtful
0.0
0.0
ao0.0
0.0
00
0-0
fiO
to
0.0
Total
o.n
o.ofi.p
00
wo
o.o
00
0.0
00
0>.O
/oo.
Evaluation
O-Bailoon
1-Asbmwical
2-Aircraft
J-LigMPho
P
P
0
0
p
p
p
Total
JL
D
^
P
O
1
P
P
5~
PerCnt
Certain
#O\O
O.c
7J>.0
uo
00
oo
?ao
o.o
P.O
mo
Douotfu
0.0
o.o
OO
O.0
00
o.o
0.0
At
0.0
Total
mo
00
Uo
0.0
0.0
1M
ao
0.0
/0O.
£-30 A?/A/vr£s
Number
Certain
_JZ.
o
0
I
0
0
_L
0
X
Doubtful
a
o
&
D
0
0
Total
/
D
/
c>
£)
V
1
0
3
Percent
Certain
ao
0.0
0.0
323
ao
o.o
O.c
^00
3X3
0,0
DoubtM
&3
0.0
00
QO
ao0./)
ao
ao
Total
&3
'0.0
op
00
OP
O.0
/OO.
Nnber
;ertain
0
0
0
2.
-£.
P
/
1
Doubtful
0
0
P
O
P
P
P
P
P
Total
a
1
0
p
o
/
/
7
Percent
Certain
0J>
m.AO
ao
2f6
0G
?•?.£
at
J*h3
/&3
/M
Doubtful
o.o
0.0
oo
0.0
,0.0
o.c
0.0
o.o
£o
0,0
Total
0.0
/#-3
o.o
0>.O
£$•(>
01
0.0
/*3
/4r3
/P0.
Nuaber
Certain
0
f
1
0
0
c
3
/
DoubtBl
0
1
1
/
P
0
p
1
£)
0
Total
0
/o
/D
0>
$
/
3
/
Per C a t
Certain
0,0
&£•
J.g
0.0
0,0
0,D
2O.Z
00
//.&
3-?
Don M M
0.0
ff
*•?
0.0
• AO
0-P
3-f
0.0
M
Total
0.0
#. 4
?.$
do
OP
IP?
//•S
240

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.