The Official CIA Manual of Trickery and Deception
Robert W. (Bob) Wallace, founder of Artemus Consulting Group and author of "The Official CIA Manual of Trickery and Deception".

Spycraft
Robert W. (Bob) Wallace, founder of Artemus Consulting Group and author of "Spycraft: The Secret History of the CIA's Spytechs from Communism to Al-Qaeda".

"Spy Sites" book series
Robert W. (Bob) Wallace, founder of Artemus Consulting Group and H. Keith Melton take you to the many places in New York City, Philadelphia, and Washington DC where espionage unfolded.

Eric Cole
CEO and editor of Secure Anchor, with focus on current cyber security news and commentary. 

Interesting places you may not know about

Crispin's Drug Store Museum
In Lincoln, Kansas