Documents / Official release
This is a Secret History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach of the Central Intelligence Agency, published in 1992. It gives a history of the CIA's manned overhead reconnaissance program from 1954 to 1974, covering the development and operation of the U-2 and the A-12 OXCART aircraft. It covers overflights of the Soviet Union, the 1960 downing of Francis Gary Powers, and later operations. One section is titled "U-2s, UFOs, and Operation BLUE BOOK."
From the source:Release of 2026-06-12 This CIA History Staff document chronicles the complete history of the U-2 and OXCART (A-12) high-altitude reconnaissance aircraft programs from 1954 to 1974, detailing their development, operations over the Soviet Union and other targets worldwide, the famous downing of Francis Gary Powers in 1960, organizational reforms following that incident, and the eventual transfer of operations from CIA to Air Force control. A more redacted version of this document has been available on CIA's public website.
“Cooper”12 pages
350 Sec, et NOFORN Bibliography ieeFet "Mystery of the RB-47." Newsweek. 25 July 1960. pp. 36-37. "Nikita and the RB-47.'' Time, 25 July 1960, pp. 30-3 I. "Office of Special Activities History, April 1969 to Phase-Out." (draft) (CIA: DS&T, 1974), chap. 3, pp. 36-42 (Top Secret Codeword). Pero. Richard K. "Message Received-Unfortunately." Studies in Intelligence 27 (Winter 1983): p. 29 (Secret). Pocock, Chris. Dragon lady: The Histor_v of the U-2 Spyplane. Shrewsbury, England: Airlife, 1989. Powers, Francis Gary, with Curt Gentry. Operation Overflight. New York: Holt, Rinehart and Wilson. 1970. Powers, Thomas. The Man Who Kept the Secrets: Richard Helms and the CIA. New York: Alfred A. Knopf, 1979. Prados, John. Presidents' Secret Wars: CIA and Pentagon Covert Operations Since World War fl. New York: William Morrow, 1986. ---. The Soviet Estimate: U.S. Intelligence Analysis and Russian iHilitary Strength. New York: Dial Press, 1982. ~----____J Covert Support to Indonesian Revolutionary Government, 1957-/958. 2 vols. Clandestine Service Historical Series, CSHP-53. CIA: History Staff, 1970 (Secret). "Red Air Force: The World's Biggest." New.rn·eek, 23 August 1954, pp. 28-33. Richelson, Jeffrey. American Espionage and the Soviet Target. New York: William Morrow, 1987. "Russia Parades Airpower as 'Big Stick':· Aviation Week, 28 June 1954, p. 15. Russo, Andrew J. low-level Technical Reconnaissance over Mainland China ( 1955-66). Clandestine Services Historical Program, CSHP-2.348. CIA: History Staff, 1972 (Secret). Stanley, Roy M., II. World War II Photo Intelligence. New York: Scribners, 1981.
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Official release, from the pursue collection. The PDF is mirrored here; the original link is under it. 406 pages are in the text index: search them above, or from the library's search.