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.
“The Pentagon”12 pages
355 Seeret NOFORN Index A A-I camera 50 A-2 aircraft 262-263 A-2 camera 53, 77. 100, 104-105. 108 A-3 aircraft 263 A-II 268. 294 A-12 271, 273-274, 277-278. 28 I, 283-286. 289-292. 294-297, 299. 302-305. 307-311, 329 Abel. Rudolf 183, 332 Ad Hoc Requirements Committee 81. 114, 188-189, 332 Adana. Turkey 113 Ade11auer. Konrad - 101 Adkins. Charles N. 342 Administration (East) Building 42 advanced antiballistic-missile (ABM) 139 aerial cameras 13, 31. 49. 329 aerial lenses 327 aerial photography 3. 13, 33. 49, 96, 119 aerial tankers 313 aerodynamic lift 248. 277 aerodynamic structural tests 274 aerodynamicist 342 Aerospace Corporation 328 Afghanistan 126. 170. 176. 189 afterburner plume 271 ailerons 47, 69 Air Research and Development Command 5. 8 Air Staff for Intelligence 154 Air Weather Service 89. 94 air-cooled reactor 239 air-inlet system 291 air-to-air missiles 285,336 air-traffic controllers 72-73. 289 Air/Maritime Division (AMO) 73 aircraft carrier 145, 247, 250 airfields 82, 95-96, 105. 117. 153. 216, 221,226,317 airframe 5, 8. 10. 24, 26. 48. 56, 71, 105. 132-133, 248. 259. 274, 279. 286. 289 airframe contractors 259 airspace 3-4, 19. 127. 134. 142. 144-147. 152-153. 182. 231. 239,241, 303. 306. 318. 322 airspeed I 6& 16 I gg ?35 .,., Alaska 133-134. 145. 316 Sec,et""
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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.