That the United States has conducted a program of high-altitude and space-borne photographic reconnaissance since the mid-1950s is hardly a secret. With the public release of many previously classified source documents and project histories, the time is right for Philip Taubman’s history of the strategic issues, politics, personalities, and technologies that drove the development of America’s extraordinary space reconnaissance capability.
Mahncke, Frank C.
"Secret Empire: Eisenhower, the CIA and the Hidden Storyof America’s Space Espionage,,"
Naval War College Review: Vol. 57
, Article 29.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol57/iss1/29