soviet booklet Powers' case : material of the court hearings in the criminal case of the American spy-pilot Francis Gary Powers, Moscow, August 17-19, 1960 ; [transl. … Gentlemen spies / by Kurt Singer Soviet atomic spies / Bernard Newman Vertoogh van de krijghs-oeffeninghe in 't particulier van musquet en spies / by een gevoeght door Karel Ketner, capitain-lt. over de compagnie van de guardes … Nederlandse schilderkunst : tussen detail en grandeur / Ad van der Blom, Ernest Kurpershoek, Claudia Thunnissen ; [red.: Kunsthistorisch advies en organisatiebureau D'Arts, Paul Spies] Spies and traitors : a short history of espionage / Kurt Singer secrets of the German war office / by Armgaard Karl Graves, Late spy to the German Government background book spy web : a study of communist espionage / by Francis Noel-Baker
