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."
“Canberra”8 pages
Skunk Works Design Staff 005653421 UNCLASSIFIED —9eepe4.111QECIaLL Chapter 2 46 speed of Mach 0.8 or 460 knots at altitude. Its initial maximum alti- tude would be 70,600 feet and the ultimate maximum altitude would be 73,100 feet. According to these early December 1954 specifica- tions, the new plane would take off at 90 knots, land at 76 knots, and be able to glide 244 nautical miles from an altitude of 70,000 feet. After discussing the reconnaissance bay with James Baker, Johnson had worked out various equipment combinations that would not ex- ceed the weight limit of 450 pounds. Johnson ended his report by promising the first test flight by 2 August 1955 and the completion of four aircraft by 1 December 1955.'" Kelly Johnson, -A High-Altitude Reconnaissance Aircraft, - 9 December 1954, Lockheed Contract Files, OSA Records (S). UNCLASSIFIED
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FOIA release, from the cia-readingroom 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.