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 EXCELLENT GOOD DOURTEUL POOR 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 13 8 21 6.4 3.9 10.3 49 34 83 9.5 6.6 16.1 38 23 61 10.4 6.3 14.7 15 10 25 10.5 7.0 17.5 1-Astronomical 28 19 47 13.7 9.3 23.0 83 57 140 16.1 11.1 27.2 73 43 116 20.0 11.8 21.8 18 21 39 12.6 14.7 27.3 2-Aircraft 27 13 40 13.2 6.4 19.6 32 35 67 6.2 6.8 13.0 26 22 48 7.1 6.0 13.1 11 6 17 7.7 4.2 11.9 3-Light Phenom. 0 0 0 0.0 0.0 0.0 6 2 8 1.2 0.4 1.6 1 2 3 0.3 0.5 0.8 2 0 2 1.4 0.0 1.4 4-Birds 0 2 2 0.0 1.0 1.0 4 2 6 0.8 0.4 1.2 5 0 5 1.4 0.0 1.4 0 0 0 0.0 0.0 0.0 5-Clouds, Dust, etc. 0 0 0 0.0 0.0 0.0 7 1 8 1.4 0.2 1.6 2 1 3 0.5 0.3 0.8 0 0 0 0.0 0.0 0.0 6-Insuffic. Info. 3 0 3 1.5 0.0 1.5 14 0 14 2.7 0.0 2.7 18 0 18 4.9 0.0 4.9 15 0 15 10.5 0.0 10.5 7-Psychological 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 0 1 1 0.0 0.3 0.3 0 2 2 0.0 1.4 1.4 8-Unknown 77 0 77 37.7 0.0 37.7 155 0 155 30.2 0.0 30.2 90 0 90 24.7 0.0 24.7 30 0 30 21.0 0.0 21.0 9-Other 14 0 14 6.9 0.0 6.9 28 5 33 5.4 1.0 6.4 17 3 20 4.7 0.8 5.5 3 10 13 2.1 7.0 9.1 TABLE A47 EVALUATION OF ALL SIGHTINGS FOR ALL YEARS BY SIGHTING Evaluation Excellent Good Doubtful Poor 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 6 5 11 5.8 4.8 10.6 51 29 80 9.2 5.2 14.4 62 57 119 6.6 6.1 12.7 36 14 50 9.4 3.7 13.1 1-Astronomical 17 11 28 16.3 10.6 26.9 83 53 136 14.9 9.5 24.4 129 95 224 13.8 10.2 24.0 45 42 87 11.7 11.0 22.7 2-Aircraft 14 6 20 13.5 5.8 19.3 73 73 146 13.1 13.1 26.2 131 113 244 14.0 12.1 26.1 40 20 60 10.4 5.2 15.6 3-Light Phenom. 2 0 2 1.9 0.0 1.9 4 7 11 0.7 1.3 2.0 14 13 27 1.5 1.4 2.9 3 0 3 0.8 0.0 0.8 4-Birds 0 0 0 0.0 0.0 0.0 1 2 3 0.2 0.4 0.6 7 3 10 0.8 0.3 1.1 2 1 3 0.5 0.3 0.8 5-Clouds, Dust, etc. 0 0 0 0.0 0.0 0.0 1 9 10 0.2 1.6 1.8 2 2 4 0.2 0.2 0.4 0 0 0 0.0 0.0 0.0 6-Insuffic. Info. 9 0 9 8.7 0.0 8.7 19 0 19 3.4 0.0 3.4 132 0 132 14.1 0.0 14.1 88 0 88 23.0 0.0 23.0 7-Psychological 0 0 0 0.0 0.0 0.0 3 1 4 0.5 0.2 0.7 21 5 26 2.3 0.5 2.8 14 1 15 3.7 0.0 3.7 8-Unknown 31 0 31 29.8 0.0 29.8 127 0 127 22.8 0.0 27.8 113 0 113 12.1 0.0 12.1 66 0 66 17.2 0.3 17.5 9-Other 3 0 3 2.9 0.0 2.9 14 6 20 2.5 1.1 3.6 25 9 34 2.8 1.0 3.8 8 2 10 2.1 0.5 2.6 EXCELLENT GOOD DOUBTFUL POOR 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 1 0 1 11.1 0.0 11.1 0 0 0 0.0 0.0 0.0 1 0 1 25.0 0.0 25.0 2 0 2 50.0 0.0 50.0 1-Astronomical 2 0 2 22.2 0.0 22.2 1 0 1 9.1 0.0 9.1 0 1 1 0.0 25.0 25.0 0 0 0 0.0 0.0 0.0 2-Aircraft 1 1 2 11.1 11.1 22.2 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 3-Light Phenom. 0 0 0 0.0 0.0 0.0 1 0 1 9.1 0.0 9.1 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 4-Birds 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 0 0 0 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 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 1 0 1 9.1 0.0 9.1 0 0 0 0.0 0.0 0.0 2 0 2 50.0 0.0 50.0 7-Psychological 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 0 1 1 0.0 25.0 25.0 0 0 0 0.0 0.0 0.0 8-Unknown 3 0 3 33.3 0.0 33.3 5 0 5 45.5 0.0 45.5 1 0 1 25.0 0.0 25.0 0 0 0 0.0 0.0 0.0 9-Other 1 0 1 11.1 0.0 11.1 3 0 3 27.3 0.0 27.3 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 Excellent Good Doubtful Poor 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 4.0 0.0 4.0 2 0 2 4.9 0.0 4.9 0 0 0 0.0 0.0 0.0 1-Astronomical 1 0 1 10.0 0.0 10.0 6 4 10 24.0 16.0 40.0 16 3 19 39.0 7.3 44.3 6 0 6 44.2 0.0 44.2 2-Aircraft 0 0 0 0.0 0.0 0.0 1 1 2 4.0 4.0 8.0 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 3-Light Phenom. 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 1 0 0 2.4 0.0 2.4 0 0 0 0.0 0.0 0.0 4-Birds 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 0 0 0 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 0 0 0 0.0 0.0 0.0 0 0 0 0.0 0.0 0.0 6-Insuffic. Info. 4 0 4 40.0 0.0 40.0 1 0 1 4.0 0.0 4.0 2 0 2 4.9 0.0 4.9 4 0 4 30.7 0.0 30.7 7-Psychological 0 0 0 0.0 0.0 0.0 0 1 1 0.0 4.0 4.0 2 0 2 4.9 0.0 4.9 1 0 1 7.7 0.0 7.7 8-Unknown 3 0 3 30.0 0.0 30.0 6 0 6 24.0 0.0 24.0 8 0 8 19.5 0.0 19.5 2 0 2 15.4 0.0 15.4 9-Other 2 0 2 20.0 0.0 20.0 4 0 4 16.0 0.0 16.0 7 0 7 17.1 0.0 17.1 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.