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.
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144 Sec1 et NOFOAN Chapter 3 U-2s flying well within international airspace above the Black Sea, as was the case on 27 October I957, when electronic intelligence equip ment on a U-2 flight over the Black Sea that never violated Soviet airspace revealed 12 attempts at interception by Soviet fighters.'n The sole U-2 overflight of 1958 was conducted by a dirty bird from Detachment C. On I March 1958, mission 6011 overflew the Soviet Far East and photographed the Trans-Siberian Railroad, Sovetskaya Gavan', the Tatar Strait, and a strange installation at Malaya Sazanka, which was eventually determined to be a structure for mating nuclear devices with their detonators. This was the first and only U-2 overflight of the Soviet Union staged from Japan.94 On 5 March 1958, the Soviet Union delivered a vigorous protest concerning this mission, prompting President Eisenhower to tell Colonel Goodpaster on 7 March to inform the CIA that U-2 flights were to be "discontinued, effective at once." 95 This standdown was to last more than 16 months, until July 1959. The Soviets had not been fooled by the antiradar devices carried by mission 601 l, as was demonstrated by the detailed information about the mission contained in a Soviet aide-memoire delivered on 21 April I958. It was clear that dirty bird aircraft were not effective and that Soviet radar operators had little difficulty in tracking them. At this point, the Agency aban doned the use of the antiradar devices on the U-2. As a substitute, Lockheed began working to develop a paint with radar-suppressant qualities, but this project also proved unsuccessful. The U-2s were not the only cause for the Soviet protests that so vexed the President. On 27 June 1958, an Agency C-118 on a courier flight from Adana to Teheran strayed into Soviet Armenia and was shot down; the Soviets captured two survivors, including one Agency employee. Ten days later the Air Force began launching balloons de signed to fly across the Soviet Union and Eastern Europe. This new balloon project (known as WS-461 L) had been authorized by President Eisenhower on 25 June after Deputy Secretary of Defense Donald Quarles argued that a small number of balloons should be '" Mission folder 4061 (27 October 1957), OSA records, job 67-B-972, bol\ 8 (TS Codeword). •• Mission folder 6011 (1 March 1958), OSA records. job 67-B-972, box 13 (TS Codeword). '" Andrew J. Goodpaster, Memorandum for the Record, 7 March 1958, WHOSS, Alpha, DDEL (TS, declassified). G8GF8t
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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.