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.
“Sea”2 pages
DE 75 EVALUATION OF OBSERVER RELIABILITY ## CODE 77 RELIABILITY GROUP CLASSIFICATION (Based on observer and report ratings) Excellent (Observer 0 or 1 and Report 0 or 1) Good (Observer 0 or 1, Report 2, 3, or 4; Observer 2, 3, or 4, Report 0 or 1; Observer 2, Report 2) Doubtful (Observer 0 or 1, Report 5 or 9; Observer 2, Report 3, 4, 5, or 9; Observer 3 or 4, Report 2, 3, 4, 5, or 9; Observer 5 or 9, Report 0, 1, 2, 3, or 4) Poor (Observer 5, 9, or Y, Report 5, 9, or Y) ## CODE 76 EVALUATION OF REPORT RELIABILITY X Y 0 Complete 1 Quite 2 Fair 3 Doubtful 4 Poor 5 Not 6 7 8 9 Cannot be judged ## CODE 78 FINAL IDENTIFICATION X Probably Y 0 Balloon 1 Astronomical 2 Aircraft 3 Light phenomenon 4 Birds 5 Clouds, dust, etc. 6 Insufficient information 7 Psychological manifestations 8 Unknown 9 Other
FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 312 pages are in the text index: search them above, or from the library's search.