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.
“United Press”17 pages
377 Plans, Directorate of 73, 81, 157,197,211,287 Plesetsk, Soviet Union 176 Poland I00-101, l04, I 10, 123, 145,303 polarizing filters 330 Polaroid Corporation 18, 24, 29 POLECAT 221 Polish Ambassador to the US 109 Polyarny Ural 172 polygraph examination 185 Pope, Allen L. 214-215 poppy fields 254 Port Said, Egypt 120 Portsmouth Harbor 94 . P9tassium cyanide 66. 125 powered glider 14, 25. 339 Powers. Francis Gary 88,117,124, 174-178, 181-187, 190-191, 195, 197,201.219, 221. 224,252,316,322.332, 336 Poznan, Poland 104 PR3 aircraft 5 Pratt, Perry W. 31 Pratt & Whitney 12, 31. 35, 40, 48, 67, 71. 152,217, 251,268,270, 284-285, 290 Pratt & Whitney J58 power plant 270 Pratt & Whitney J75-Pl3 jet engine 152 Pratt & Whitney J75/19W engines 284 Pratt and Whitney J57 12 President's Board of Consultants on Foreign Intelligence Activities 37, 127, 167, 170, 190, 192,328, 330 President's Foreign Intelligence Advisory Board 37 President's Intelligence Checklist 201 President's Science Advisory Committee 37 pressure suits 64, 247 pressurized "spacesuit" 63 Prettyman. E. Barrett 184-185 Prettyman Board 185 Princeton University 29 processing and interpretation centers 115 Project Director 61. 82. 329 Project Officer. AFCIG-5 61 Project Staff 40-43. 56, 72-73. 82, 89, 170. 299 Project Three 27, 29-34. 327 propaganda 88, 160, 162. 183. 186. 317 Pryor. Frederick 183 psychological warfare 186. 222 Pueblo 242. 307,320 Puerto Rico 207,211 Pulse-Position Indicator display 267 Purcell. Edward M. 18, 29, 110-111. 129,260,263. 271, 274. 332 Putt, Donald L. • 11. 35-36. 40 PYO [Soviet Air Defense] 174 Sec, et NOfOAl'I Index Secret
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Official release, from the pursue 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.