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
362 Secret rllOFOAN Index Curtiss-Wright Corporation 328 Czechoslovakia IOI D ________ D-21 aircraft 291 Dalai Lama 216 Dallas. Texas 293 Damage Assessment Team 183 David Clark Company 62 Davis, Saville 18 Dayton. Ohio 4. 8 DC-6 aircraft 341 deep penetration overflights 316. 123 Defector Reception Center (DRC) ") defectors Defense. Department of 33. 61. 122. 145, 154, 161. 234, 236-237, 239, 267, 292-293. 301-302. 304. 310. 317 Defense. Deputy Secretary of 81, 127, 144. 161, 188, 207. 300. 309 Defense. Secretary of 161. 298 Defense Mobilization, Office of 17, 26 Science Advisory Committee 37 Del Rio, Texas 256, 198 Delta-rI camera 250 denied territory 174, 188. 190 Deputy Director of Central Intelligence (DDCI) 30. 36. 43. 327,329.88. 101, 122-123. 127, 139, 186-187, 201, 208-209, 223 Detachment A 94-95, !00-101, 106. 114, 116, 124-125, 139-140, 142-143, 181,316 Detachment B 113, 116, 120-121, 124-126, 133, 135, 139, 142-143. 152-153, 155-157. 164, 167, 181-182. 187. 316 Detachment C 133-134, 139, 143-144, 152, 157, 182, 211-212. 214-220. 224. 316 Detachment G 133. 181-182. 198-199. 211. 221-222. 230-233. 243. 248, 250-251, 254-257 Detachment H 225-226, 228-230. 232-237. 239-241, 243-246, 250-251, 255 Development. Deputy Chief of Staff for 7. 11. 17. 35 Development Planning. Office of 12 Development Projects Division (DPD) 157. 191 Development Projects Staff 40. 55-56, 132. 157, 191. 212,331 Dirty-Birds 128. 130. 135 Donovan. Allen F. 18. 21. 24-26. 29-31, 35. 260. 328 Donovan. James 183 Doolittle, James H. 61. 167. 328 Douglas Aircraft 339 DRAGON 2 DRAGON LADY 77 drivers 59 drone 291. 343 Dryden. Hugh 89, 182 DuBridge, Lee 26-27 8ecaet
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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.