Documents / FOIA release
This is a 1992 CIA History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach, originally classified Secret NOFORN and approved for release in 2013. It covers the CIA's manned overhead reconnaissance program from 1954 to 1974 and the two aircraft it developed, the U-2 and the A-12 OXCART. The history covers the U-2 overflights of the Soviet Union, the 1960 downing of Francis Gary Powers and later operations in Asia and Latin America. It also includes a section on U-2s, UFOs and Operation BLUE BOOK.
“Hill”14 pages
Read from the scan by GLM-OCR; expect the odd misread word.
Chapter 2
The first success in designing very-high-acuity lenses came in the mid-1940s, when James G. Baker of Harvard and Richard S. Perkin of the Perkin-Elmer (P-E) Company of Norwalk, Connecticut, collaborated on a design for an experimental camera for the Army Air Force. They developed a 48-inch focal-length scanning camera that was mounted in a modified B-36 bomber. When tested over Fort Worth, Texas, at 34,000 feet, the new camera produced photographs in which two golf balls on a putting green could be distinguished (in reality, however, the "golf balls" were 3 inches in diameter). These photographs demonstrated the high acuity of Baker's lens, but the camera weighed more than a ton and was much too large to be carried aloft in an aircraft as small as the U-2.
Realizing that size and weight were the major restraining factors in developing a camera for the U-2, James Baker began working on a radically new system in October 1954, even before the CIA adopted the Lockheed proposal. Baker quickly recognized, however, that he would need almost a year to produce a working model of such a complex camera. Since Kelly Johnson had promised to have a U-2 in the air within eight months, Baker needed to find an existing camera that could be used until the new camera was ready. After consulting with his friend and colleague Richard Perkin, Baker decided to adapt for the U-2 an Air Force camera known as the K-38, a 24-inch aerial framing camera built by the Hycon Manufacturing Company of Pasadena, California.
Perkin suggested modifying several standard K-38 cameras in order to reduce their weight to the U-2's 450-pound payload limit. At the same time, Baker would make critical adjustments to existing K-38 lenses to improve their acuity. Baker was able to do this in a few weeks, so several modified K-38s, now known as A-1 cameras, were ready when the first "Angel" aircraft took to the air in mid-1955. $ ^{15} $
CIA awarded Hycon a contract for the modified K-38 cameras, and Hycon, in turn, subcontracted to Perkin-Elmer to provide new lenses and to make other modifications to the cameras in order to make them less bulky. In its turn, Perkin-Elmer subcontracted to Baker to rework the existing K-38 lenses and later design an improved lens system. To keep his lens-designing efforts separate from Not linked to a story yet.
FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 406 pages are in the text index: search them above, or from the library's search.