Thomas B. Allen is well known for his writing in the subject of espionage and military history. His books include Declassified: 50 Top-Secret Documents That Changed Military History. He is also the co-author with Norman Polmar of Spy Book: The Encyclopedia of Espionage, and an encyclopedia of World War II: America at War 1941-1945. His writings on intelligence and related topics have appeared in such national publications as Smithsonian and The Washington Post Magazine, in addition to the Naval Institute's Proceedings [5] and Naval History [6] magazines.