Incoming Resources
- Enemies, how America's foes steal our vital secrets--and how we let it happen, Bill Gertz
- The great game, the myth and reality of espionage, Frederick P. Hitz
- Spy schools, how the CIA, FBI, and foreign intelligence secretly exploit America's universities, Daniel Golden
- Overworld, the life and times of a reluctant spy, Larry J. Kolb
- Unwarranted, policing without permission, Barry Friedman
- The strange case of Alger Hiss, the Earl Jowitt
- Hidden secrets, David Owen
- Ultimate spy, by H. Keith Melton ; forewords by Richard Helms and Markus Wolf
- Spooked, the Trump dossier, Black Cube, and the rise of private spies, Barry Meier
- How to catch a Russian spy, the true story of an American civilian turned double agent, Naveed Jamali and Ellis Henican
- Circle of treason, a CIA account of traitor Aldrich Ames and the men he betrayed, Sandra Grimes and Jeanne Vertefeuille
- The encyclopedia of World War II spies, Peter Kross
- Espionage, fascinating stories of spies and spying, David Owen
- Broker, trader, lawyer, spy, inside the secret world of corporate espionage, Eamon Javers