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Project Blue Book Special Report (second copy)
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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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- p. 1 …10073
5 MAY 1955
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- p. 15 /v
Identification of Working Papers
The actualjreduction of d.ata to IBM jaujijchedj^c_a.rd…
- p. 27 Unknown
434 = 19.7%
'952 Other
233 = 10.3%
Astronomical
479 =21.8 %
1947-51
C…
- p. 28 …of object sightings
2(99 79
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- p. 48 Total Less Astronomical;
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Per Cent
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Astronomical
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Total Less Aircraft
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Aircraft
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- p. 50 Total Less Balloon
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January
February
March
April…
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Per Cent
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c
January…
- p. 52 Total Less Other
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Per Cent
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January
February•
March…
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Total 1286 434…
- p. 87 …turn, during which time it blinked some
C—lights which looked like running lights. While the…
- p. 112 …Evaluation of Unit Sightings for All Years by North A m e r i c a…
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Total
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- p. 136 …7-Piy rtoloji a l
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- p. 150 …LL
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- p. 153 …4-Bints
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MtJw…
- p. 154 …4-Binh
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STUDY NO. IO2-EL-55/2-79
ANALYSIS OF REPORTS OF
UNIDENTIFIED AERIAL OBJECTS
PROJECT NO. 10073
5 MAY 1955
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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.