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.
WORK SHEET Observer's Data Sheet Question Punched Card Column Code Description 1. 1* Serial No. Incident serial number 2 3 4 Serial No. Insertion 5 6 2. 7 Day 8 9 10 Month 11 Year Observed 3. 12 13 Day 14 15 2. 16 Month Reported 17 18 3. 20 Month Rec'd ATIC 21 22 4. 24 Hrs. Time of observation Greenwich C. T. 25* 26 Time Units Duration Duration of observation 5. 27 28* Latitude 29 30 5. 31 Longitude Location 32* 33 34 Longitude 35 36 37 Cosine latitude 38 39 40 \* Denotes separate code key is needed.
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.