The U.S. Army's Signal Intelligence Service, the precursor to the National Security Agency, began a secret program in February 1943 later codenamed VENONA

The mission of this small program was to examine and exploit Soviet diplomatic communications but after the program began, the message traffic included espionage efforts as well.

Although it took almost two years before American cryptologists were able to break the KGB encryption, the information gained through these transactions provided U.S. leadership insight into Soviet intentions and treasonous activities of government employees until the program was canceled in 1980.

The VENONA files are most famous for exposing Julius (code named LIBERAL) and Ethel Rosenberg and help give indisputable evidence of their involvement with the Soviet spy ring.

The first of six public releases of translated VENONA messages was made in July 1995 and included 49 messages about the Soviets' efforts to gain information on the U.S. atomic bomb research and the Manhattan Project. Over the course of five more releases, all of the approximately 3,000 VENONA translations were made public.

 29SEP_PATON.PDFA report from covername PATON (a Naval GRU officer) 29 September 1943 (Release 4)
 27MAR_MILLER.PDFA report from KGB agent James W. Miller
 7DEC_CENSOR_OFFICE.PDFA report from KGB agent James W. Miller about his work for the U.S. Censor's office. The Censor has found secret writing in some Naval GRU material 7 December 1943 (Release 4)
 7MAY_LIAISON.PDFA report on liaison 7 May 1943 (Release 4)
 21SEP_GERMAN_SHIPS.PDFA report on location of German ships 21 September 1943 (Release 4)
 21APR_ORLEMANSKI.PDFA report on the actions of: Mr. ORLEMANSKI
 14APR_MILITARY.PDFA report on the military situation 14 April 1943 (Release 4)
 11MAY_TROTSKYITES.PDFA report on the Trotskyites in Mexico
 18MAR_PASH.PDFA report that Lt. Col. Pash, Chief of US Army CIC in San Francisco has left for Iran
 6APR_TROTSKY.PDFA report to Beria regarding Trotsky's murderer
 21FEB_REPRIMAND.PDFA reprimand from Moscow 21 February 1943 (Release 4)
 23OCT_SECRET_MARINE_CAMP.PDFA secret U.S. Marine Corps camp 23 October 1943 (Release 4)
 20JUL_SHIP_AGROUND.PDFA ship has run aground 20 July 1943 (Release 4)
 17JAN_SMALL_CASH_PAYMENT.PDFA small cash payment.
 8MAY_JAPAN_INFO.PDFA source for information about Japan 8 May 1943 (Release 4)
Page 21 of 100