FBI Silvermaster File (original) (raw)

The Silvermaster File of the United States' Federal Bureau of Investigation is a 162-volume compendium totalling 26,000 pages of documents relating to the FBI's investigation of GRU and NKVD moles inside the U.S. federal government both before and during the Cold War. Beginning in 1945 with the allegations of defector and former NKVD 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).