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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.

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Evaluation
O-Balloon
1-Aslnnomical
2-Aircr«tt
3-Light Ptienom.
4-Birds
S-Clouds, Dust, e t c
trlmutlic Info.
7-Psydo logical
8-Unknown
mother
Total
JfCa
Number
Certain
—4
/0
2.
o
0
0
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0
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0
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0
0
1
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Total
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f
Total
^//i/a 6*?&GA/ I?/?Js. '
Number
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1
p
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fi0
£-7
/IP
00
0.0
fi «
33.3
Percent
Doubtful
O.O
U-7
0.0
0.0
0.0
0.0
0,0
so
e.o
&C-7
Total
00
7SV
(••7
00
0.0
0.0
00
0 0
2.O.0
0,0
(00.
//-S0 S
Number-
Certain
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0
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0
0
0
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Total
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f
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Percent
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O.O
1*2
91
'0
00
0.0
0.0
0.0
27.5
Total
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tl.t
?•/
00
0.0
0,0
0.0
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9./
(00.
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1
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0
0
0
/
P
K-60 J
Number
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0
O
O
O
a
0
0
0
-C
Total
0
0
0
O
0
0
0
O
Certain
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0
0
0
0
0
Total
/
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2,
0

e
d
O
JL
Doubtful
0
0
0
0
0
(>
O
O
a
0
Total
/
/
/
0
0
0
0
0
J
0
Per Cent
Certain
/t.7
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0.0
0.0
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0.6
Total
fa 7
//.,7
//„•/
0.0
#r STATED
Number
Certain
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JJL
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0
6
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../.
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O
/f
2.
a
0
0
0
a
0
A/
Total
O
S3
s
0
O
0
0
/
Per Cent
Certain
J/o
361.4
1.2
00
0.0
0.0
/.I*
Doubtful
0.0
4/-3
4-5
0.0
00
0.0
0.0
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0.0
0,0
4*~i
Total
0.0
7/. 7
0.0
0.0
0,0
IS.0
0-0
?-2
/00.
226

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.