Decryption of Soviet Telegram about Code Name "Enormous"

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Description

The telegram is entitled “Organization of Work on ENORMOUS and Photography of Material: ARNO, PERS, OSA, KALIBR, LIBERAL, ‘MLAD,’ Kh’Yus, SVET, KALISTRAT, METR (1944).” “Enormous” was the Soviet code name for the Manhattan Project and the U.S. development of the Atomic Bomb.

This is a message from a Soviet agent about the espionage conducted by Julius Rosenberg and Harry Gold. This document was declassified in 1995 and not used in the prosecution of the Rosenbergs.

Citation

This primary source comes from the Records of the National Security Agency/Central Security Service.

National Archives Identifier: 595374

Full Citation: Decryption of Soviet Diplomatic Telegram Relating to the Code Name ‘Enormous’ and Photography of Material; 12/13/1944; First Venona Release; Public Release Copies of Records Relating to Project Venona, 1995–1997; Records of the National Security Agency/Central Security Service, Record Group 457; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/document/decryption-ussr-telegram-enormous/, April 1, 2026]

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