Chambers). Bentley accusations 1945, 1948, 1953 On November 7, 1945, defecting Soviet espionage courier Elizabeth Bentley told investigators of the Federal Bureau of Investigation (FBI) that in late 1942 or early 1943 she learned from Soviet spies Nathan Gregory Silvermaster and Ludwig Ullmann that one source of the government documents they were photographing and passing on to her and NKVD spymaster Jacob Golos was Harry Dexter White. The next day, FBI Director J. Edgar Hoover sent a hand-delivered letter to Truman's Military Aide, Gen. Harry Vaughan, at the White House, reporting information that "a number of persons employed by the government of the United States have been furnishing data and information to persons outside the Federal Government, who are in turn transmitting this information to espionage agents of the Soviet government." The letter listed a dozen Bentley suspects, the second of whom was Harry Dexter White. The FBI summarized the Bentley information and in its follow-up investigation on the suspects she named, again including White, in a report entitled 'Soviet Espionage in the United States', which was sent to the White House, the Attorney General and the State Department on December 4, 1945. Six weeks later, on January 23, 1946, Truman nominated White as U.S. Director of the International Monetary Fund. The FBI responded with a 28-page memo specifically on White and his contacts, received by the White House on February 4, 1946. White's nomination was approved by the Senate, acting in ignorance of the allegations against White, on February 6, 1946. (Six years later, Truman would testify that White had been "separated from the Government service promptly" upon receipt of this information—first from the Treasury, and then from the IMF. In fact, White was still at the IMF on June 19, 1947—more than two years after the FBI had alerted the White House about him—when he abruptly resigned (vacating his office the same day), after Attorney General Tom Clark ordered a Federal grand jury investigation of the Bentley charges.) On July 31, 1948, Bentley told the House Committee on Un-American Activities that White had been involved in espionage activities on behalf of Soviet Union during World War II, and had passed sensitive Treasury documents to Soviet agents. Bentley said White's colleagues passed information to her from him. In her 1953 testimony Bentley said that White was responsible for passing Treasury plates for printing Allied military marks in occupied Germany