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
95 Seeret NOFORN Chapter 3 same time, Richard Bissell learned that the State Department had told Prime Minister Eden that only one U-2 was based at Lakenheath, when in reality there were four.' THE MOVE TO WIESBADEN To avoid arousing further reaction in the United Kingdom and to begin the program of U-2 overflights beyond the Iron Curtain without further delay, Bissell moved Detachment A on 11 June I 956 to Wiesbaden, one of the busiest airfields in West Germany, without notifying West German authorities. The detachment commander, Col. Frederick McCoy, was disappointed in his hope that the redeployment of the U-2s could be accomplished without drawing undue attention. The strange-looking planes, with bicycle-type wheels and wings so long they touched the ground after landing, aroused considerable in terest. Wiesbaden was to be only a temporary home for Detachment A; the Air Force began preparing Giebelstadt near the East German border for use by the U-2s. Giebelstadt was an old World War II airbase that had been one of the launching sites for the GENETRIX balloons.5 Soon after the four U-2s arrived in Wiesbaden, they were refitted with the more powerful J57/P-3 l engines. The new engines were bet ter suited for operations behind the Iron Curtain because they were less likely to suffer flameouts than the earlier model. Once the new engines were installed, the aircraft received the designation U-2B.6 Bissell was anxious to get the overflights started by late June because SAC weather experts had predicted that the best weather for photographing the Soviet Union would be between 20 June and 10 July. Bissell, however, had not yet received final authorization from President Eisenhower to begin overflights of the Soviet Union. On 28 May 1956, when DCI Allen Dulles met with the President to discuss the U-2's readiness for operations, Eisenhower still made no decision on overflights. Three days later Dulles and Air Force Chief of Staff ' Christopher Andrew, Her Majesty's Secret Service: The Making of the British Intelligence Community (New York. 1986). pp. 495-496; Beschloss, Mayday, p. I 16; OSA History, chap. 11, pp. 18-21 (TS Codeword). ' OSA History, chap. 11, pp. 21-23 (TS Codeword). • Ibid .. pp. 23, 26 (TS Codeword). Secret
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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.