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.
“Titan II”1 page
388 Sec, et NOFORN Index prebreathing 64, 125 projects 39-40. 42-44. 56, 59, 61-62. 71, 73. 74, 81-82, 88-89, 97, 153-155, 157. 186,257,316, 327-331 rocking mount 51, 53 stall envelope 71 stalls 80 tail section 47, 76 taxi trials 68-69 training 302 vertical stabilizers 277,343 vulnerability study 97, 207 U-28 95 U-2Cs 152, 196, 208, 210, 217 U-2F 198 U-2G 248. 250, 252. 255 U-2R 251-253, 257, 282, 336 U-3 66 Ukraine 106 Under Secretary of State 188, 225 Unidentified Flying Objects (UFOs) 72 United Arab Republic 153 United Kingdom (See Great Britain) United Kingdom Requirements Committee 154 United Nations 20 United Press International (UPI) 232 United States 2-4, 7-8. 19-21. 26-27. 73. 77-78. 85, 89-90. 96. 98- I00. I08-110. 112. 117, 121, 124. 140, 142. 147-148. 153-156. 159, 161. 163-164, 179. 181-183. 187,201. 205,215. 221-222, 224-226. 229-232, 245- 247. 254. 256. 285, 294. 297, 299. 301-302. 306. 315. 60. 316, 318-319. 332 unmanned reconnaissance aircraft '1QJ 304 UPWIND 303 Urals 22. 163 uranium gaseous-diffusion plant 239 uranium-processing facility 138 US Air Attache in Moscow 177 US Air Force. Secretary of the I I. 32, 78, 81. 327-329 US Air Force Air Weather Service 94 Chief of Air Scaff 78 EC-130. 146 Inspector General 61 oxygen mask 62 RB-57D Canberra 162 Third Air Force 89 US deterrent force 317 US Geological Survey 254 US House of Representatives Appropriations Committee 88 US Marine Corps 40. 153. 247, 328 US Marine Corps Reserve 14 US Military Academy at West Point 329 US Navy Chief of Naval Materiel 285 Secret
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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.