Book and Dagger: How Scholars and Librarians Became the Unlikely Spies of World War II

The Secret War: Spies, Ciphers, and Guerrillas, 1939-1945

Sir Max Hastings

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The Monuments Men: Allied Heroes, Nazi Thieves, and the Greatest Treasure Hunt in History

Robert M. Edsel

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The World's Greatest Military Spies and Secret Service Agents: The History of Espionage – True Crime Stories

George Barton

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