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.
Observer's Data Sheet Question Punched Card Column Code Description 6. 41* Where observer was _ __,,1,..,,._B_.____,..4~~,.,.....---------==M.-ovi_n~ - Stopped 10. 43* How observed 12a. 44* Sound 12c. 45* Color 12e. 46* Number 12g. 47* Light-color Speed Appearance Description 12b. 19 49* 12b. 19 50* 12d. lfie.20 51* i2r. 14r. 5°2* 53* 4. 12h. 14. 18. 19 54* 1 . *13. 14. 16 17. 9 Shape a/b Size Light brightness Angular velocity An ar acceleration Describe appearance Describe disappearance Initial elevation Final elevc:.tion __l_,,2,;;.,;i,;...•~21.,...;....____6,.,,0__________A,.,.1..,.t_itude, 1000 ft. 18. 19. 61* Object orientation 2* 63 64 69 70 71 72 73 74 75 Civilian occupation Service occupation 76-:;:. Observer Motion Elevation Altitude Observer """'7"""7--~---------'""R"'"'e-pu:ct Evaluation 7B* Preliminary Identification Final * Denotes separate code key is needed. 300 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.