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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.

Open the PDF at page 291 Original source ↗

“Works”18 pages

  • p. 3 …Questionnaire 4 Coding System and Work Sheet 6 Identification of Working Papers 7 Evaluation of Individual…
  • p. 10 …During the course of the work, the number of reports sub- mitted for analysis and evaluation…
  • p. 13 …On the basis of this analysis, plus the experience gained in working with past reports, the…
  • p. 14 Coding System, and Work Sheet The reduction of non-numerical data to numerical form is mandatory…
  • p. 15 /v Identification of Working Papers The actualjreduction of d.ata to IBM jaujijchedj^c_a.rd…
  • p. 16 …most representative report from each MULTIPLE OBSERVATION. (2) The questionnaire, work sheet, and IBM card representing…
  • p. 17 …report for each phenomenon. (2) The questionnaire, work sheet, and IBM card representing a report for…
  • p. 18 …Using one column of the IBM card, and the correlated working papers, the code for this…
  • p. 21 …This work was done at ATIC, periodically, as reports became ready. During an identification conference, each…
  • p. 84 …only of persons previously associated with the work. Using all the UNKNOWNS reports available at ATIC…
  • p. 97 …for a radio station was driving to work from his home when he noticed an object…
  • p. 101 …This feeling of surfeit was universal among the personnel who worked on this project, and continually…
  • p. 261 APPENDIX B WORKING PAPER FORMS M i 255 and 256
  • p. 262 …Codes for Work Sheet Exhibit B5. Work Sheet . Exhibit B6. Codes for Card Bible Exhibit B7…
  • p. 289 t EXHIBIT B4 CODES FOR WORK SHEET ft 289 and 290
  • p. 295 fc! EXHIBIT B5 WORK SHEET • 1 297 and 298
  • p. 296 Observer's Data Sheet Question WORK SHEET Punched Card Column Code Description 2 3 h Serial…
  • p. 299 …These cards (and the corresponding WORK SHEETS) contain data from several sources. Columns referenced to the…
CODE 43 OBSERVATION METHOD
X Variable
Y
0 Naked eye
1 Eye glasses
2 Window
3 Windshield
4 Binocular
5 Telescope
6 Theodolite
7 Radar
8 Photographic
9 Other
CODE 45 COLOR
X
Y
0
1
2
3
4
5
6
7
8
9
Variable
Metallic
Light-glow-luminous
Red
Orange
Yellow
Green
Blue
Violet
Black
White
£ODE 48 SPEED
X
Y
0
1
2
3
4
5
6
7
8
9
Variable
Hovering, stationary
Less than 100 m.p.h.
100-400 m.p.h.
More than 400 m.p.h.
Meteor like
Not stated
Other
CODE
X
Y
0
1
2
3
4
5
6
7
8
9
CODE 44 SOUND
X
Y
0
1
2
3
4
5
.6
7
8
9
-
-
-
-
_
—
—
Variable
Motors
Jet or rockets
Explosion
Unlike aircraft
r
Hiss, swishing, whining
Rumbling
Humming or buzzing
None
Not stated
Other
•
NUMBER CQDE
1
2
3
4
5
6
7-10
1 1 - 2 0
2 0 - 3 0
31 or more
CODE 49 SHAPE
X
Y
0
1
2
3
4
5
6
7
8
9
Variable
Ellipse
Rocket
X
Y
0
1
2
3
4
5
6
7
8
9
Conventional aircraft
LI LIGHT-COLOR
Variable
White
Black
Grey
Red
Orange
Yellow
Green
Blue
Violet
Other
Unconventional aircraft
Meteor, comet
Lenticular
Conical
Tear drop
Flame, tails, fire
Other
292

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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.