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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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“Green”8 pages

  • p. 70 …White Metallic Not stated Orange Red Yellow Green Blue Other 405 313 209 172 146 128…
  • p. 76 …There is a large excess of green sightings among the KNOWNS over the UNKNOWNS. Of the…
  • p. 78 …White Metallic Not stated Orange Red Yellow Green Blue Other 281 298 189 117 92 90…
  • p. 110 …Evaluation of All Sightings for All Years by Colors Reported for Duration of Sighting, Green or…
  • p. 111 …Evaluation of Unit Sightings for All Years by Colors Reported for Duration of Sighting, Green or…
  • p. 291 …Metallic Light-glow-luminous Red Orange Yellow Green Blue Violet Black White £ODE 48 SPEED X…
  • p. 301 …2 Red 3 Orange h Yellow 5 Green 6 Blue 7 Violet 8 Black 9 White…
  • p. 302 …3 Red k Orange 5 Yellow 6 Green . 7 Blue 8 Violet 9 Other CODE '60…
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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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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.