FBI Silvermaster File
The Silvermaster File of the United States' Federal Bureau of Investigation is a 162-volume compendium of some 26,000 pages of documents relating to the Bureau's investigation of Communist penetration of the U.S. federal government during the Cold War.
Beginning in 1945 with the allegations of defecting Soviet courier Elizabeth Bentley (Venona cover names “Myrna”; Umnitsa, “Clever Girl”), the file is also known as the Bentley file or Gregory file ("Gregory" was the FBI code name for Bentley).
The file takes its name from Nathan Gregory Silvermaster (Venona cover names Pel, Pal, "Paul"; "Robert") of the War Production Board, whom Bentley named as head of an underground Communist network known as the Silvermaster Group. Among the people named in the file in connection with this group are President Franklin Roosevelt's Administrative Assistant Lauchlin Currie (Venona cover name "Page") and Assistant Secretary of the Treasury Harry Dexter White (Venona cover names “Lawyer”; “Jurist”; "Richard").
Also named in the file are Victor Perlo (Venona cover name "Raider"), chief of the Aviation Section of the War Production Board, and contacts of his Perlo group, including Alger Hiss (Venona cover name “Ales”), secretary general of the United Nations Charter Conference. (Like several others identified by Bentley, Hiss had been identified independently by another defecting Soviet courier, Whittaker Chambers, to Assistant Secretary of State Adolf Berle in 1939.) Among dozens of others named by Bentley in this file in connection with this network is Duncan Lee (Venona cover name “Koch”), confidential assistant to William Donovan, founder and director of the Office of Strategic Services (OSS), wartime predecessor of the CIA.
Original plans for Bentley to serve as a double agent and gather sufficient evidence to prosecute the Soviet agents identified in the Silvermaster files were ruined when her identity was inadvertently leaked and the USSR quickly shut down its operations in order to avoid embarrassing and damaging prosecutions. The Silvermaster file in combination with other secret proofs such as the Venona intercepts gave US intelligence the identity of many Soviet agents without the practical means to secure convictions. Also, the statute of limitations for an espionage prosecution was quite short. This was a significant part of the backstory of McCarthyism. Bentley's double agent career would have enabled the US to expose the spies without compromising Venona and losing that as an ongoing intelligence source.
 See also
- Active measures
- History of Soviet and Russian espionage in the United States
- List of Soviet agents in the United States
- FBI Silvermaster file 65-56402
- 1353 KGB New York to Moscow, 23 Sept. 1944, p. 2
- 687 KGB New York to Moscow, 13 May 1944, p.1
- 1017 KGB New York to Moscow, 29-30 June 1943, p. 2
- 888 KGB New York to Moscow, 9th June 1943, p. 2
- 1787 KGB New York to Moscow, 19 December 1944, p.1
- FBI Report, Underground Soviet Espionage Organization (NKVD) in Agencies of the United States Government, October 21, 1946 (FBI Silvermaster file, Volume 82), p. 12
- FBI Report, Underground Soviet Espionage Organization (NKVD) in Agencies of the United States Government, October 21, 1946 (FBI Silvermaster file, Volume 82), 52
- Robert J. Hanyok, Eavesdropping on Hell: Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945 (Washington, DC: Center for Cryptologic History, National Security Agency, 2005, 2nd Ed.), p. 119
- FBI Report, op. cit., p. 78 (PDF page 86)
- 1251 KGB New York to Moscow, 2 September 1944, p. 2
- 83 KGB New York to Moscow, 18 January 1945, p.1
- FBI Report, p. 98
- 687 KGB New York to Moscow, 13 May 1944, p. 1
- FBI Report, p. 108 (PDF 119)
- 1822 KGB New York to Moscow, 30 March 1945, p. 1
- "This could only be Alger Hiss." (Appendix A, Part 6, "The Experience of the Bomb," Report of the Commission on Protecting and Reducing Government Secrecy (Moynihan Commission), Senate Document 105-2, Pursuant to Public Law 236, 103rd Congress, Washington: Government Printing Office, 1997)
- "Analysts at the National Security Agency have gone on record asserting that Ales could only have been Alger Hiss." (PBS Nova Online: "Secrets, Lies, and Atomic Spies")
- Berle’s notes on his meeting with Whittaker Chambers, September 2, 1939
- FBI Report, p. 163
- 800 KGB New York to Moscow, June 8, 1943, p. 1
- In a hand written note in the margin Hoover writes, "in view of all the 'gabbing' done by the Dept to the Press there is little which can be expected from any action now." FBI Silvermaster file, Tamm to the Director, January 23, 1947, Vol. 93, pgs. 20 -22 pdf.
- FBI Silvermanster file, Memorandum for the Attorney General, January 27, 1947.
- FBI Report, Underground Soviet Espionage Organization (NKVD) in Agencies of the United States Government], October 21, 1946 (FBI Silvermaster file, Volume 82),
 Further reading
- “Testimony of Elizabeth T. Bentley,” Hearings Regarding Communist Espionage in the United States Government, Committee on Un-American Activities, House of Representatives, Eightieth Congress, Second Session, Public Law 601 (Section 121, Subsection Q ), Washington: United States Government Printing Office, 1948.
- The Cold War International History Project (CWIHP) has the full text of former KGB agent Alexander Vassiliev's Notebooks, containing new evidence on Soviet espionage in the United States during the Cold War