Enigma machine 1940s

Reference: HW 25/26 (1) Creator: Records created or inherited by Government Communications Headquarters (GCHQ) Catalogue context: Miscellaneous photographs of ENIGMA, TUNNY and COLOSSUS Categories: Second World War Subjects: Intelligence Topics: Military and war Period: Second World War Copyright information: Copyright clearance for publication is not required, except in the case of documents in third-party copyright. Usage terms: https://www.nationalarchives.gov.uk/documents/information-management/use-of-tna-materials.pdf