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
372 Seeret ~QlzOR~ Index Luna 2 rocket 163 Lundahl, Arthur C. 82, 114-115. 117,119,121,135, 142, 154, 191,209,241, 331 M M Building 83 M-12 aircraft 291 M-195 aircraft 9 MacArthur, John 167 Macdonald. Duncan E. 22, 154-155 Macmillan, Harold 155-156, 164. 167, 187 Malaya Sazanka, Soviet Union 144 Malinovsky, Rodion 160 Malta 114, -116 Manchuria 229. 233. 237 Mandrake 148 Manhattan Project 329 Manila, Philippines 311 manned space program 62 March AFB, California 75 Mark-30 335 Marquardt ramjets 268 Marr, William H. 72 Mars 7: Marsna1 Plan 15,327 Martin. Glenn L., Aircraft Corporation 5, 8-9. 24, 270 Massachusetts Institute of Technology (MIT) 4, 15, 18, 27, 30, 110, 129-130, 327, 330, 332-333 Matomic Building 42, 104 MATS 72 Matsu Islands 229 May Day 20. 176, 191. 195 MC-2 and MC-3 partial-pressure suits 64 McConaughy, Walter P. 257 McCone. John A. 184-186, 192, 195, 197, 201, 206-207, 209, 232-234, 236-238, 240, 292-294, 296,298,300,327,331 McCoy, Frederick 95 McCullough Corporation 339 McDonnell Aircraft 312 McElroy, Neil 146, 161-162 McFadden. William 54 McMahon, John N. 186 McNamara, Robert 229, 234, 236, 238, 253, 285, 292-293, 298, 300-301 mechanical fuel totalizer/counters 68 Mediterranean Sea 114, 116. 121, 140, 142, 153 medium-range ballistic missiles 201,206 Melpar. Incorporated 342 Menderes. Adnan 112, 181 mercenary pilots 214 metal fatigue 242 SHret
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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.