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.
“Hill”15 pages
348 Seerct NOFORN Bibliography See1ct Coughlin, William. "Gardner Defends Greater R&D Spending." Aviation Week, 26 September 1955, p. 14. Eastman, Ford. "Defense Officials Concede Missile Lag." Aviation Week, 9 February 1959, pp. 26-27. Edwards, Philip K. "The President's Board: 1956-60." Studies in Intelligence 13 (Summer 1969): p. 118 (Secret). Eisenhower, Dwight D. Waging Peace, 1956-1961. Garden City, NY: Doubleday, 1965. Freedman, Lawrence. US Intelligence and the Soviet Strategic Threat. 2nd ed. Princeton: Princeton University Press, I986. George, A. L. Case Studies of Actual and Alleged Overflights, 1930-/953. Rand Study RM-1349. Santa Monica: Rand, 1955 (Secret). The Defector Reception~------,------------c---,--~~ Center Germany. /951 to 1967. Clandestine Service Historical Series CSHP-41. CIA: History Staff, 1972 (Secret). Hotz, Robert. "Firing of 900-Mile Russian Missile Spurs US Changes." Aviation Week, 20 February 1956, pp. 26-28. ---. "Russian Air Force Now Gaining in Quality." Aviation Week, 12 March 1956, pp. 286-291. ---. "Russian Jet Airpower Gains Fast on US." Aviation Week, 23 May 1955, pp. 12-15. "Is Russia Ahead in Missile Race?" US News and World Report, 6 September 1957, pp. 30-33. ··rs Russia Really Ahead in Missile Race'?,. US News and World Report, 4 May 1956, pp. 34-35. "ls Russia Winning the Arms Race?" US News and World Report, 18 June 1954, pp. 28-29. "Is US Really Losing in the Air?" US News and World Report, 18 May 1956, pp. 25-27.
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 406 pages are in the text index: search them above, or from the library's search.