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.
“King”2 pages
384 See1 et NOFORN Index System-II 335 System-III 335-336 System-IV 335 System-Y 126. 215, 335 System-YI 335. 175 System-VII 335-336 System-VIII 335 System-IX 335 System-IXB device 175 System-X 256. 336 System-XII units 23-4 System-XIII 234. 236-237. 239 System-XVI 336 System-XVH 336 System-XX 336 System-XX! 336 System-XXII 336 System-XXIV 256 T Taber. John 88 TACKLE 224. 226. 228-230. 234-239. 241-246. 2 53. 257, 282 tactical intelligence 304 tactical reconnaissance 9. 25, 115, 153 TAGBOARD 291 Tahiti 250 tailless subsonic aircraft 263 Taiwan 215-216, 222. 224-225. 229, 233, 236-237. 239, 241-243. 2-46. 251 Taiwan Strait 229 Ta Khli. AFB. Thailand 230 lalbott. Harold E. ~13-14, 36 TALL KING 294 Tallinn. Estonia 303 Tashkent. Soviet Union 176 TASS 137 Tatar Strait 144 Taylor. Maxwell 188 TCP 27 Technical Services Division (TSO) 66. 125 Technicolor 331 Technological Capabilities Panel 26-27, 29-30. 35, 62, 80, 327- 329. 332 Technology. Deputy for 192 Teheran, Iran 144 Teledyne J-100-CA-IOO Turbojet engine 343 Teledyne Ryan Aeronautical Company 343
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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.