I think I read a post on here stating that you were also interested in WWII. I am reading a book now that I think would be of interest to you. The name of the book is "Cloak and Gown, Scholars In The Secret War, 1939-1961 by Robin W. Winks".

This book began as a casual conversation on the campus of Yale University. It ended as the fullest and best investigative account by an accredited historian into how the OSS was established, by whom, and what it achieved. Based on previously unpublished private papers, recently declassified documents, plus interviews with more than two hundred former OSS and CIA agents. Cloak and Gown explores the underlying bonds between the world of the university and that of the intelligence community.

Elmer