Documents / FOIA release
This CIA-released copy of Project Blue Book Special Report No. 14 is dated 5 May 1955 and comes from the Air Technical Intelligence Center at Wright-Patterson Air Force Base. It is a statistical analysis of about 4,000 unidentified aerial object reports from 1947 through 1952, coded onto IBM punched cards with the help of a panel of scientists. The report concludes that such objects were highly unlikely to be technological developments beyond present-day scientific knowledge. It also found no valid evidence of physical matter.
“Gray”4 pages
Read from the scan by GLM-OCR; expect the odd misread word.
# Approved For Release 2005/07/20 : CIA-RDP81R00560R000100060001-5 Evaluation Total White OR Glowing White Metallic Color Not Stated Number Per Cent Number Per Cent Number Per Cent Per Cent Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total 0-Balloon 207 132 339 9.4 6.0 15.4 56 45 101 2.5 2.0 4.5 56 28 84 2.5 1.3 38 24 16 40 1.1 0.7 1.8 1-Astronomical 274 205 479 12.5 9.3 21.8 66 58 124 3.0 2.6 5.6 7 8 15 0.3 0.4 0.7 11 9 20 0.5 0.4 0.9 2-Aircraft 265 209 474 12.1 9.5 21.6 41 44 95 1.9 2.0 3.9 85 52 137 3.9 2.4 6.3 28 16 44 1.3 0.7 2.0 3-Light Phenom. 30 18 48 1.4 0.8 2.2 3 7 10 0.1 0.3 0.4 3 4 7 0.1 0.2 0.3 0 0 0 0.0 0.0 0.0 4-Birds 12 10 22 0.5 0.5 1.0 4 2 6 0.2 0.1 0.3 3 1 4 0.1 0.1 0.2 4 1 5 0.2 0.1 0.3 5-Clouds, Dust, etc. 3 7 10 0.1 0.3 0.4 1 3 4 0.1 0.1 0.2 1 0 1 0.1 0.0 0.1 1 0 1 0.1 0.0 0.1 6-Insuffic. Info. 240 0 240 10.9 0.0 10.9 48 0 48 2.2 0.0 2.2 38 0 38 1.7 0.0 1.7 62 0 62 2.8 0.0 2.8 7-Psychological 35 9 44 1.6 0.4 2.0 8 2 10 0.4 0.1 0.5 8 1 9 0.4 0.1 0.5 6 0 6 0.3 0.0 0.3 8-Unknown 434 0 434 19.7 0.0 19.7 112 0 112 5.1 0.0 5.1 76 0 76 3.5 0.0 3.5 62 0 62 2.8 0.0 2.8 9-Other 85 24 109 3.9 1.1 5.0 16 1 17 0.7 0.1 0.8 14 4 18 0.6 0.2 0.8 26 5 31 1.2 0.2 1.4 ORANGE OR GLOWING ORANGE RED OR GLOWING RED GREEN OR GLOWING GREEN LIGHT GLOW COLOR NOT KNOWN Evaluation Number Per Cent Number Per Cent Number Per Cent Number Per Cent Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total 0-Balloon 15 10 25 0.7 0.5 1.2 13 9 22 6.6 0.4 1.0 3 0 3 0.1 0.0 0.1 14 8 22 0.6 0.4 1.0 1-Astronomical 30 25 55 1.4 1.1 2.5 38 16 54 1.7 0.7 2.4 43 55 98 2.0 2.5 4.5 25 9 34 1.1 0.4 1.5 2-Aircraft 18 22 40 0.8 1.0 1.8 22 14 36 1.0 0.6 1.6 7 7 14 0.3 0.3 0.6 18 22 40 0.8 1.0 1.8 3-Light Phenom. 10 0 11 6.5 0.0 0.5 1 2 3 0.1 0.1 0.2 2 0 2 0.1 0.0 0.1 4 2 6 0.2 01 0.3 4-Birds 1 1 2 0.1 0.1 0.2 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 0 1 1 0.0 0.1 0.1 5-Clouds, Dust, etc. 0 0 0 0.0 0.0 0.0 0 1 1 0.0 0.1 0.1 0 0 0 0.0 0.0 0.0 0 1 1 0.0 0.1 0.1 6-Insuffic. Info. 17 0 17 0.8 0.0 0.8 18 0 18 0.8 0.0 0.8 9 0 9 0.4 0.0 0.4 21 0 21 1.0 0.0 1.0 7-Psychological 4 3 7 0.2 0.1 0.3 3 0 3 0.1 0.0 0.1 0 0 0 0.0 0.0 0.0 0 1 1 0.0 0.1 0.1 8-Unknown 49 0 49 2.2 0.0 2.2 33 0 33 1.5 0.0 1.5 14 0 14 0.6 0.0 0.6 21 0 21 1.0 0.0 1.0 9-Other 9 7 16 0.4 0.3 0.7 7 2 9 0.3 0.1 0.4 3 1 4 0.1 0.1 0.2 5 0 5 0.2 0.0 0.2 YELLOW OR GLOWING YELLOW BLUE OR GLOWING BLUE BLACK OR GLOWING BLACK LIGHT GLOW INDETERMINATE COLOR Evaluation Number Per Cent Number Per Cent Number Per Cent Number Per Cent Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total 0-Balloon 16 8 24 0.7 0.4 1.1 3 1 4 0.1 0.1 0.2 5 7 12 0.2 0.3 0.5 1 0 1 0.1 0.0 0.1 1-Astronomical 24 14 38 1.1 0.6 1.7 28 10 38 1.3 0.5 1.8 1 0 1 0.1 0.0 0.1 0 0 0 0.0 0.0 0.0 2-Aircraft 22 14 36 1.0 0.6 1.6 8 9 17 0.4 0.4 0.8 12 7 19 0.5 0.3 0.8 2 1 3 0.1 0.1 0.2 3-Light Phenom. 5 1 6 0.2 0.1 0.3 1 0 1 0.1 0.0 0.1 0 0 0 0.0 0.0 00 1 1 2 0.1 0.1 0.2 4-Birds 0 2 2 0.0 0.1 0.1 0 0 0 0.0 0.0 00 0 1 1 0.0 0.1 0.1 0 0 0 0.0 0.0 0.0 5-Clouds, Dust, etc. 0 1 1 0.0 0.1 0.1 0 0 0 0.0 0.0 00 0 1 1 0.0 0.1 0.1 0 0 0 0.0 0.0 0.0 6-Insuffic. Info. 14 0 14 0.6 0.0 0.6 3 0 3 0.1 0.0 0.1 10 0 10 0.5 0.0 0.5 0 0 0 0.0 0.0 0.0 7-Psychological 2 0 2 0.1 0.0 0.1 1 1 2 0.1 0.1 0.2 3 1 4 0.1 0.1 0.2 0 0 0 0.0 0.0 0.0 8-Unknown 31 0 31 1.4 0.0 1.4 26 0 26 1.2 0.0 1.2 7 0 7 0.3 0.0 1.3 1 0 1 0.1 0.0 0.1 9-Other 3 2 5 0.1 0.1 0.2 2 0 2 0.1 0.0 0.1 0 2 2 0.0 0.1 0.1 0 0 0 0.0 0.0 0.0 VIOLET OR GLOWING VIOLET GLOWING GRAY Evaluation Number Per Cent Number Per Cent Number Per Cent Number Per Cent Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total Certain Doubtful Total 0-Balloon 0 0 0 0.0 0.0 0.0 1 0 1 0.1 0.0 0.1 1-Astronomical 1 0 1 0.1 0.0 0.1 0 1 1 0.0 0.1 0.1 2-Aircraft 1 1 2 0.1 0.1 0.2 1 0 1 0.1 0.0 0.1 3-Light Phenom. 0 0 0 0.0 0.0 0.0 0 1 1 0.0 0.1 0.1 4-Birds C 1 1 0.0 0.1 0.1 0 0 0 0.0 0.0 0.0 5-Clouds, Dust, etc. C 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 6-Insuffic. Info. 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 7-Psychological C 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 8-Unknown 1 0 1 0.1 0.0 0.1 1 0 1 0.1 0.0 0.1 9-Other C 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 </td
FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 312 pages are in the text index: search them above, or from the library's search.