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 TABLE A84 EVALUATION OF UNIT SIGHTINGS FOR ALL YEARS BY 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 228 151 379 8.9 5.9 14.8 61 50 111 2.4 2.1 4.5 65 32 97 2.5 1.3 3.8 28 21 49 1.1 0.8 1.9 1-Astronomical 983 256 639 15.0 10.0 25.0 93 67 160 3.6 2.6 6.2 8 9 17 0.3 0.4 0.7 23 16 39 0.9 0.6 1.5 2-Aircraft 292 235 527 11.4 9.2 20.6 49 54 103 1.9 2.1 4.0 88 54 142 3.4 2.1 5.5 32 16 48 1.3 0.6 1.9 3-Light Phenom. 32 21 53 1.3 0.8 2.1 3 8 11 0.1 0.3 0.4 3 4 7 0.1 0.2 0.3 0 1 1 0.0 0.1 0.1 4-Birds 13 10 29 0.5 0.4 0.9 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. 261 0 261 10.2 0.0 10.2 54 0 54 2.1 0.0 2.1 40 0 40 1.6 0.0 1.6 70 0 70 2.7 0.0 2.7 7-Psychological 36 9 45 1.4 0.4 1.8 8 2 10 0.3 0.1 0.4 8 1 9 0.3 0.1 0.4 6 0 6 0.2 0.0 0.2 8-Unknown 497 0 497 19.5 0.0 19.5 131 0 131 5.1 0.0 5.1 84 0 84 3.3 0.0 3.3 71 0 71 2.8 0.0 2.8 9-Other 92 28 120 3.6 1.1 4.7 19 1 20 0.7 0.1 0.8 15 6 21 0.6 0.2 0.8 29 6 35 1.1 0.2 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 16 10 26 0.6 0.4 1.0 13 10 23 0.5 0.4 0.9 3 0 3 0.1 0.0 0.1 14 10 24 0.5 0.4 0.9 1-Astronomical 40 28 68 1.6 1.1 2.7 50 21 71 2.0 0.8 2.8 52 70 122 2.0 2.7 4.7 37 9 46 1.4 0.4 1.8 2-Aircraft 22 26 48 0.9 1.0 1.9 23 17 40 0.9 0.7 1.6 7 9 17 0.3 0.4 0.7 21 25 46 0.8 1.0 1.8 3-Light Phenom. 10 0 10 0.4 0.0 0.4 1 2 3 0.1 0.1 0.2 2 0 2 0.1 0.0 0.1 4 2 6 0.2 0.1 0.3 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 0 1 1 0.0 0.1 0.1 6-Insuffic. Info. 18 0 18 0.7 0.0 0.7 18 0 18 0.7 0.0 0.7 9 0 9 0.4 0.0 0.4 24 0 24 0.9 0.0 0.9 7-Psychological 5 3 8 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 55 0 55 2.2 0.0 2.2 35 0 35 1.4 0.0 1.4 19 0 19 0.7 0.0 0.7 24 0 24 0.9 0.0 0.9 9-Other 9 8 17 0.4 0.3 0.7 7 2 9 0.3 0.1 0.4 3 1 4 0.1 0.1 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 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 17 9 26 0.7 0.4 1.1 4 1 5 0.2 0.1 0.3 5 7 12 0.2 0.3 0.5 1 0 1 0.1 0.0 0.1 1-Astronomical 34 17 51 1.3 0.7 2.0 44 16 60 1.7 0.6 2.3 1 0 1 0.1 0.0 0.1 0 2 2 0.0 0.1 0.1 2-Aircraft 22 16 38 0.9 0.6 1.5 10 9 19 0.4 0.4 0.8 12 7 19 0.5 0.3 0.8 3 1 4 0.1 0.1 0.2 3-Light Phenom. 7 2 9 0.3 0.1 0.4 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 0 2 2 0.0 0.1 0.1 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 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 6-Insuffic. Info. 15 0 15 0.6 0.0 0.6 3 0 3 0.1 0.0 0.1 10 0 10 0.4 0.0 0.4 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 36 0 36 1.4 0.0 1.4 29 0 29 1.1 0.0 1.1 9 0 9 0.4 0.0 0.4 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 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 2 1 3 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 0.1 0.1 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 2 0 2 0.1 0.0 0.1 9-Other 0 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.