Office Memorandum ● UNITED STATES GOVERNMENT
TO: Mr. LaddDATE: May 15, 1950
FROM: Mr. Belmont
SUBJECT:
ESPIONAGE — R
STRICTLY CONFIDENTIAL
PURPOSE:
The purpose of this memorandum is to briefly summarize important investigation developments in this case individual these related thereto, based on information.
INTRODUCTION:
has been able to furnish to us certain fairly detailed information regarding MGB (Soviet Intelligence) activities in the United State in the period April, 1944, through March, 1945. The information indicates the extensive use of cover names by the MGB which often makes identification difficult where we have little information available from the source. In the following material an effort has been made to beak down the information from into individual networks, particularly in the instances were we previously had investigated certain ramifications of the Soviet espionage activity in this country.
THE SILVERMASTER NETWORK
The information deals in part with the operation of the MGB in their recruitment and use of personnel in various Government Agencies previously known to us through our investigation to the Nathan Gregory Silvermaster case. The individuals positively or tentatively identified from include Nathan Gregory Silvermaster, Helen Silvermaster, Ludwig Ullman, Bela Gold, Sonia Gold, Victore Perlo, Elizabeth Bentley, Jacob Golos, Harry Magdoff, Peter Rhodes, Allen Rosenberg, Harold Glasser, Anatoli B. Gromov, Joseph Katz, and Vladimir S. Prevdin, all of whom were implicated in the information furnished to us by Elizabeth Bentley.
In addition to the foregoing, we have a considerable number of individuals attached to the same network, identified only through cover names, whom we are attempting by investigation to identify. The most important of these is an individual by the cover name of Albert, who, from the information, operates
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