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
373 ~eeret NOFORN meteorologists 42, 87 MI-6 93, 154 Michigan, University of, School of Aeronautics 329 microwave reconnaissance 19 Middle East overflights 114, 116 MiG aircraft 336 MiG-15 108, 148 MiG-17 5, 108, 148 MiG-19 148 MiG-21 148, 237, 244 Military Adviser to the President 188 Military Air Transport Service 72 MILL TOWN 216 . Miller, Stewart E. 18. 21. 39-40, 55-56, 331 I "million-dollar" photography Ill miniaturization 339 mirrors 54-55 Mirza 135 "missile gap" 157, 159,317 missiles 2, 22, 81, 98-99, 137, 139, 149, 160-161, 165, 167,171,201, 205-206, 209, 226, 239, 243, 257, 285, 299, 301, 303-304, 306-307, 315, 317-318, 336,339 Mississippi River 78,310 MKNAOMI 66 Monthly Activities Book 189 Index moon 163 Morotai 214 Moscow, Soviet Union 3, 20. 85, 94, IOI, 105-106, 109, 124, 143, 145, 160, 167, 177, 179,318 MUDLARK 178 multiengine aircraft 12, 24-25 multiple sensors 22 Murmansk, Soviet Union _140, 142, 172, 174, 176 Mururoa Atoll 250 Myasishchev-4 (see Bison bomber) N Nagy, lmre 123 Nank.ing. China 228 Narcotics. Bureau of 254-255 Nasser, Gama! Abdel 112. 153 National Advisory Committee on Aeronautics 89, 94 National Aeronautics and Space Agency (NASA) 178-179, 254 National Air & Space Museum 64 National Intelligence Estimates 19. 235 national intelligence objectives 81 National Security Agency 81,114,134,185,327 National Security Bureau 224 National Security Council 27, 294, 161, 167, 187-188, 191, 197, 212 Seeret
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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.