Documents / FOIA release
This is a CIA History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach, written in 1992 and approved for release in 2011. It covers the CIA's manned overhead reconnaissance program from 1954 to 1974 and its two aircraft, the U-2 and the A-12 OXCART. It follows their development, the overflights of the Soviet Union, the downing of Francis Gary Powers in 1960, and later operations. One section is titled "U-2s, UFOs, and Operation BLUE BOOK."
“Edwards Air Force Base”5 pages
Covert Support to Indonesian Revolutionary Government, 1957-1958. 2 vols. Clandestine Service Historical Series, CSIP-53. CIA: History Staff, 1970 (Secret). CO5653421 UNCLASSIFIED Secret FORN Bibliography 350 EO 129581.13181111>101010<25Yrs 181 "Red Air Force: The World's Biggest." Newsweek, 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. 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. UNCLASSIFIED
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FOIA release, from the cia-readingroom 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.