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 TOTALS 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 270 180 450 84 5.6 14.0 77 63 140 2.9 2.0 4.4 79 39 118 2.5 1.2 3.7 32 25 57 1.0 0.8 1.8 1-Astronomical 476 341 817 14.9 10.6 25.5 116 83 199 3.6 2.6 6.2 11 11 22 0.3 0.3 0.6 41 18 59 1.3 0.6 1.9 2-Aircraft 354 288 642 11.1 9.0 20.1 65 69 134 3.0 2.2 4.2 101 75 176 3.2 2.3 5.5 47 23 65 1.3 0.7 2.0 3-Light Phenom. 32 24 56 1.0 0.8 1.8 3 8 11 0.1 0.3 0.4 3 5 8 0.1 0.2 0.8 0 1 1 0.0 0.1 0.1 4-Birds 19 10 29 0.6 0.3 0.9 6 2 8 0.2 0.1 0.3 3 1 4 0.1 0.1 0.3 7 1 8 0.2 0.1 0.3 5-Clouds, Dust, etc. 12 13 25 0.4 0.4 0.8 3 4 7 0.1 0.1 0.2 3 0 3 0.1 0.0 0.1 4 0 4 0.1 0.0 0.1 6-Insuffic. Info. 298 0 298 9.3 0.0 9.3 58 0 58 1.8 0.0 1.8 58 0 58 1.8 0.0 1.8 78 0 78 2.4 0.0 2.4 7-Psychological 38 10 48 1.2 0.3 1.5 11 0 11 0.3 0.0 0.3 9 0 9 0.3 0.0 0.3 8 0 8 0.3 0.0 0.3 8-Unknown 689 0 689 21.5 0.0 21.5 177 0 177 5.5 0.0 5.5 126 0 136 3.9 0.0 3.9 113 0 113 3.5 0.0 3.5 9-Other 112 35 147 3.5 1.1 4.6 28 0 38 0.9 0.0 0.9 25 0 35 0.8 0.0 0.8 43 0 43 1.3 0.0 1.3 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 18 11 29 0.6 0.3 0.9 16 10 26 0.5 0.3 0.8 3 0 3 0.1 0.0 0.1 15 14 29 0.5 0.4 0.9 1-Astronomical 49 31 80 1.5 1.0 2.5 64 29 93 2.0 0.9 29 58 99 157 1.8 3.1 4.9 48 16 64 1.5 0.5 2.0 2-Aircraft 33 31 64 1.0 1.0 2.0 26 18 44 0.8 0.6 1.4 7 9 16 0.2 0.3 0.5 26 26 52 1.8 0.8 1.6 3-Light Phenom. 10 0 10 0.3 0.0 0.3 1 2 3 0.1 0.1 0.2 2 0 2 0.1 0.0 0.1 4 4 8 0.1 0.1 0.2 4-Birds 2 1 3 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 2 1 3 0.1 0.1 0.2 6-Insuffic. Info. 20 0 20 0.6 0.0 0.6 17 0 17 0.5 0.0 0.5 12 0 12 0.4 0.0 0.4 25 0 25 0.8 0.0 0.8 7-Psychological 8 0 8 0.3 0.0 0.3 3 0 3 0.1 0.0 0.1 0 0 0 0.0 0.0 0.0 1 0 1 0.1 0.0 0.1 8-Unknown 66 0 66 2.1 0.0 2.1 51 0 51 1.6 0.0 1.6 30 0 30 0.9 0.0 0.9 31 0 31 1.0 0.0 1.0 9-Other 18 0 18 0.6 0.0 0.6 15 0 15 0.5 0.0 0.5 4 0 4 0.1 0.0 0.1 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 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 18 9 27 0.6 0.3 0.9 5 1 6 0.2 0.1 0.3 5 7 12 0.2 0.2 0.4 1 0 1 0.1 0.0 0.1 1-Astronomical 39 21 60 1.2 0.7 1.9 48 25 73 1.5 0.8 2.3 1 2 3 0.1 0.1 0.2 0 5 5 0.0 0.2 0.2 2-Aircraft 25 17 42 0.8 0.5 1.3 10 10 20 0.3 0.3 0.6 12 8 20 0.4 0.2 0.6 3 1 4 0.1 0.1 0.2 3-Light Phenom. 7 2 9 0.2 0.1 0.3 1 0 1 0.1 0.0 0.1 0 0 0 0.0 0.0 0.0 1 1 2 0.1 0.1 0.2 4-Birds 1 2 3 0.1 0.1 0.2 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 5-Clouds, Dust, etc. 0 1 1 0.0 0.1 0.1 0 3 3 0.0 0.1 0.1 0 3 3 0.0 0.1 0.1 0 0 0 0.0 0.0 0.0 6-Insuffic. Info. 16 0 16 0.5 0.0 0.5 4 0 4 0.1 0.0 0.1 10 0 10 0.3 0.0 0.3 0 0 0 0.0 0.0 0.0 7-Psychological 2 0 2 0.1 0.0 0.1 2 0 2 0.1 0.0 0.1 4 0 4 0.1 0.0 0.1 0 0 0 0.0 0.0 0.0 8-Unknown 43 0 43 1.3 0.0 1.3 34 0 34 1.1 0.0 1.1 12 0 12 0.4 0.0 0.4 1 0 1 0.1 0.0 0.1 9-Other 5 0 5 0.2 0.0 0.2 2 0 2 0.1 0.0 0.1 2 0 2 0.1 0.0 0.1 0 0 0 0.0 0.0 0.0 VIDLET OR GLOWING VIOLET GLOWING GRAY Evaluation 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 0 1 1 0.0 0.1 0.1 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 3 1 4 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 0 1 1 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 5-Clouds, Dust, etc. 0 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 0 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 4 0 4 0.1 0.0 0.1 9-Other 0 0 0 0.2 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.