The history of CIA's Office of Strategic Research, 1967-81

Vickers, Robert D., Jr., author.
Washington, D.C. : Central Intelligence Agency, Center for the Study of Intelligence, 2019.

Origins of intelligence services: the ancient Near East, Persia, Greece, Rome, Byzantium, the Arab M

Dvornik, Francis, 1893-1975.
New Brunswick, N.J. : Rutgers University Press, [1974]

The rise and fall of intelligence : an international security history

Warner, Michael.
Washington, DC : Georgetown University Press, [2014]

Secret intelligence in the twentieth century

FitzGibbon, Constantine, 1919-1983.
New York : Stein and Day, 1977, c1976.