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to one "Beck," Identified as Sergei N. Kournakoff, documents pertaining to key personnel at Los Alamos. It was also reported that Hall's, friend, Saville Sax, had delivered a copy of a report to the USSR Consulate in New York, where Sax was received by the Soviet agent identified under the cover name "Alxius." The individual has been identified as Anatoli (illegible text) Yakolev, who also functioned as the Soviet superior over the Rosenberg and Gold networks. Hall and Sax are both presently residing in Chicago, Illinois. Both of them have been active openly in the activities of Communist Party dominated or infiltrated organisations. They have been especially active obtaining signatures to the "Stockholm Peace Pledge." By memorandum dated February 16, 1951, the Chicago Office was instructed to conduct comprehensive interviews with both Hall and Sax. Chicago has asked New Uork for additional information regarding Kournakoff prior to conducting the Interview, This is being followed closely.

Sergei N. Kournakoff was, during the period when in contact with Hall and Sax, also the military analyst for The Daily Worker and New Masses. In 1946 he returned to the Soviet Union. The Daily Worker er July 19, 1949, reported that he was in Moscow on July 5, 1949. Other information from   would appear to indicate that he operated as a Soviet espionage agent mainly in the infiltration of White Russian activities. We are continuing to conduct investigation of these activities in an effort to identify other Soviet agents.

SCIENTIFIC DEVELOPMENT
ESPIONAGE                           

Andrei Ivanovich Schevchenko

Information from   substantiated (illegible text) investigation, has shown that Andrei Ivanovich Schevchenko (illegible text) group leader in an espionage network which was obtaining information regarding scientific developments. Schevchenko, a Russian National, arrived in the United States at New York City on June 19, 1942, as an engineer of the Soviet Government Purchasing Commission. Shortly thereafter he became the Russian representative at the Bell Aircraft Corporation in Buffalo, In York, for inspection of aircraft allocated to the Soviet Union. On February 23, 1945, he became a Vice-Chairman on the Amtorg

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