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.
“RAF”18 pages
6 Secret i'JOF'OfUd Chapter 1 division in Baltimore, headed by Lt. Col. Joseph J. Pellegrini. had to approve all new reconnaissance aircraft designs. Pellegrini·s unit reviewed Leghorn's design and ordered extensive modifications. According to Leghorn, Pellegrini was not interested in a special- pur pose aircraft that was only suitable for covert peacetime reconnais sance missions, for he believed that all Air Force reconnaissance aircraft shou ld be capable of operating under wartime conditions. Pellegrini therefore insisted that Leghorn ·s design meet the specifica tions for combat aircraft, which required heavily stressed airframes, armor plate. and other apparatus that made an aircraft too heavy to reach the higher altitudes necessary for safe overflights o f the Soviet Bloc. The final result of Leghorn's concept after its alteration by Pellegrini ·s staff was the RB-57D in I 955, whose maximum altitude RAF Canberra Mark-PR3 Seeret
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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.