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.
“Canberra”11 pages
18 Secret ~OfiORN Chapter 1 Sec1et defense known as Project LINCOLN, then under way at the Massachusetts Institute of Technology. By the end of the year, these experts had assembled in Boston to begin their research. Their head quarters was located over a secretarial school on Beacon Hill, which soon became the codename for the reconnaissance project. The con sultants were called the BEACON HILL Study Group. The study group's chairman was Kodak physicist Carl F. P. Overhage, and its members included James G. Baker and Edward M. Purcell from Harvard; Saville Davis from the Christian Science Monitor; Allen F. Donovan from the Cornell Aeronautical Laboratory; Peter C. Goldmark from Columbia Broadcasting System Laboratories; Edwin H. Land, founder of the Polaroid Corporation; Stewart E. Miller of Bell Laboratories; Richard S. Perkin of the Perkin-Elmer Company; and Louis N. Ridenour of Ridenour Associates, Inc. The Wright Air Development Command sent Lt. Col. Richard Leghorn to serve as its liaison officer.30 During January and February 1952, the BEACON HILL Study Group traveled every weekend to various airbases, laboratories, and firms for briefings on the latest technology and projects. The panel members were particularly interested in new approaches to aerial re connaissance, such as photography from high-flying aircraft and camera-carrying balloons. One of the more unusual (albeit unsuccess ful) proposals examined by the panel was an "invisible" dirigible. This was to be a giant, almost flat-shaped airship with a blue-tinted, nonreflective coating; it would cruise at an altitude of 90,000 feet along the borders of the Soviet Union at very slow speeds while using a large lens to photograph targets of interest.31 After completing these briefings at the end of February 1952, the BEACON HILL Study Group returned to MIT, where the panel mem bers spent the next three months writing a report detailing their recommendations for ways to improve the amount and quality of in telligence being gathered on the Soviet Bloc. Published as a classified "' USAF, Project LINCOLN. BEACON HILL Report: Problems of Air Force Intelligence and Reconnaissance. Massachusetts Institute of Technology. 15 June 1952, pp. v, xi: app. A (S. downgraded to C). '' Allen F. Donovan. telephone conversation with Donald E. Welzenbach. 21 June 1985 (U) : James G. Baker, interview by Donald E. Welzenbach. tape recording, Washington, DC, 24 April 1985 (S}.
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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.