Project Blue Book was one of a series of systematic studies of Unidentified flying objects (UFOs) conducted by the United States Air Force (U.S.A.F.). Started in 1952, it was the second revival of such a study. A termination order was given for the study in December 1969, and all activity under its auspices ceased in January 1970.


Air Force History’s Referencing UFOs in the Blue Book Era

blank History of the Directorate of Intelligence June 1 – December 31 1952 [13 Pages, 3MB]

blank History of the 5th Air Force, Daily Intel Summary, October 1952 [7 Pages, 1.7MB]

blank History of the 5th Air Force, Daily Intel Summary, August 1952 [7 Pages, 1.5MB]

blank Lessons Learned, Headquarters, 52d Combat Aviation Battalion, 22 September 1969 [54 Pages, 3MB] – It is unclear if this document is part of the Blue Book system. It does confirm, however, that towards the end of the Blue Book era, military installations were still seeing UFOs – some they were later able to identify – while others they were not.

The Condon Committee Report

The report contains the results of a scientific inquiry into the phenomena of Unidentified Flying Objects. This volume contains: (1) The scientific context, (2) Appendices A-X, and (3) The index.

These are searchable .pdf files, however, are quite large. Please note the file sizes.

blank The Condon Report, Volume 1, January 1969 [529 Pages, 174MB]

blank The Condon Report, Volume 2, January 1969 [374 Pages, 233MB]

blank The Condon Report, Volume 3, January 1969 [523 Pages, 275MB]

Other Related Documents

blank Project Blue Book Status Report Number 8, 31 December 1952 [17 Pages, 0.8MB] – This item can be found on microfilm roll number 85 of microfilm publication T1206. Project ‘Bluebook.’, 1947-1969.

blank Appendix I to Project Blue Book Status Report Number 8 [1 Page, 0.8MB]

blank Project Blue Book [43 Pages]

blank Project Blue Book FBI File [13 Pages] – This small file relates to an Air Force program for the investigation of Unidentified Flying Objects. The Secretary of the Air Force discontinued this program in 1969.

blank Project Blue Book Records, Air Force Missile Development Center, 1947-1970 [42 Pages, 5.18MB] – These documents were obtained from the Air Force Historical Research Agency (AFHRA).

blank Review of the University of Colorado Report on Unidentified Flying Objects by a Panel of the National Academy of Sciences – The ad hoc committee concurs with the findings of the report of the University of Colorado entitled ‘Scientific Study of Unidentified Flying Objects,’ Dr. Edward U. Condon, Scientific Director. Panel agrees that a study of UFOs in general is not a promising way to expand scientific understanding of the phenomena, and adds: ‘On the basis of present knowledge the least likely explanation of UFOs is the hypothesis of extraterrestrial visitations by intelligent beings.’

blank Unidentified Aerial Objects Project “Sign” [55 Pages, 19.8mb] – This is the best copy available, which was obtained by the DTIC.

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