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."
“Burbank”8 pages
U-2 at testing site before attachment of wings and tail assembly CO5653421 UNCLASSIFIED "IITOWISQ,ERN Chapter 2 48 ED 129581.61G11>10<25Yrs (S1 that they could be recovered and reused. The aircraft landed on its front and back landing gear and then gradually tilted over onto one of the wingtips, which were equipped with landing skids." THE DEVELOPMENT OF THE CAMERA SYSTEM By December 1954, Kelly Johnson was at work on drawings for the U-2's airframe and Pratt & Whitney was already building the J57 jet " For the design features of the U-2 in early 1955, see R. F. Boehme, Summary Report: Reconnaissance Aircraft, Lockheed Aircraft Corporation Report 10420. 28 January 1955. pp. 7-9, OSA Recordsi \ (5). UNCLASSIFIED
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FOIA release, from the cia-readingroom 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.