Documents / Case file
This CIA archives copy, released in 2026, holds Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects). The Air Technical Intelligence Center at Wright-Patterson Air Force Base issued it on 5 May 1955. The study reduced about 4,000 sighting reports from 1947 to 1952 to IBM punched cards, with 3,201 cases charted, and applied chi square tests to compare known and unknown sightings. It concludes that it is highly improbable the reports represent technological developments beyond present-day scientific knowledge.
From the source:Release of 2026-06-12 This is the USAF Project Blue Book with a CIA cover sheet stating the document is "Official Record Copy." With the exception of the handwritten note on the first page, the content of this document has been available on CIA's public website.
“Sea”2 pages
U. s. Air Force Technical Information Sheet Question 5. 15. 16a. 16b. Punched Card Column 3 39 4q 41 42* 43* 4~ 45 46 47J,f- 48 49. 50 51* 52* 3 54 55* s& 57~,f, SB-ii- Code Description Hour Angle Angle of Elevation of the Sun Group Classification sun Bearing Angle Time Units Duration of Observation Group Classification How Observed Sound Object Color 16b. 17. 59* 60* Light Color Physical ------------~:,":'"'--------:c==-0-=1"'"0-r--,is-Gr-o-up 19. 61* Classification Number 62* 6y1- lla. llb. 39. Sp __1~7~•;,....;..l_B~._24~•;;.......,...-------,.:;'-----------,S~h-a.p_e__ Description 64*llf. 21. 22. 24. Size 65*10. lle. Light Brightness 66-ii- 67* 5. 11, 17. 20. Angular Velocity Motion 33. Angular Acceleration 68* 69* 29. 31, 1. Appearance Bearing Disappearance Bearing 70* 11~1- * 73➔ 1- 41. 74* 75* 7&.- 77* 78-if * Denotes that separate code key is needed. 304 Initial Elevation Final Elevation Description rientation Maneuvers Observer Occupation Observer Rating Observer Report Rating Reliability Group Classification Final Identification I I I I I I I I I I I I I I I I I I I I I I
Case file, from the pursue collection. The PDF is mirrored here; the original link is under it. 312 pages are in the text index: search them above, or from the library's search.