◆ SpookStack

I.C. 65-8946 operatives in the United States.' After receiving final. he sailed from Genoa, Italy, and arrived in New York City on February 8, 1940 The FBI previously had been advised of Sebold's expected arrival, his mission and his intentions to assist them.. in identifying German agents in the United States. Under the guidance of Special Agents, Sebold established residence in. New York City as Harry Sawyer. Also, an office was establisheg. for him as~a' consultant diesel engineer, to be used as a .cover in.. establishing contacts with members of the spy ring. In selecting this office for Sebold, FBI. Agents ensured that they could Observe any meetings taking place there. In May, i94o, a shortwave radio transmitting station. operated by FBI Agents on. Long Island established contact with the German shortwave station abroad.. This radio station served as a main-channel of communication between German spies in New York City and their superiors in Germany for. 16 months.?. During this time, the FBi's radio station transmitted over 300 messages to Germany, and reeeived 2oo messages fron Germany. Seboid's. success as a counterespionage agent against Nazi spies in' the United States is demonstrated by the suocessful 'asoe? Jo yaot Mon ut sauege uemaeg Ee ae? Jo uonannasoad arrested on charges of espionage, 19 pleaded guilty.. The 14 men who entered pleas of not guilty were brought to trial in Federal District Court, Brooklyn, New York, on September 3, 1941, and they were all found guilty by jury on December 13,'194i.'. The activities of eaeh of these'convicted spies and Sebold's role in uncovering their espionage activities for the Reich follow. FREDERICK JOUBERT DUQUESNE Born in Cape Colony, South Africa, on September 21, 1877, Frederick Joubert Duquesne emigrated from Hamilton, Bermuda, to the United States in i9o2 and became a naturalized. United States citizen on December 4, 19i3. Duquesne was resulted from a fire aboard the British steamship Tennyson which caused the vessel to sink on February 18, 1916. When he was arrested on November 17, 19i7,he had in his *possession s' large file of news clippings concerning bomb explosions on ships, as well as a letter from the Assistant German Vice Consul at Managua, Nicaragua. The letter indicated that nCaptain Duquesne" was "one who has rendered considerable service to the German cause."