Donald Watts Davies, computer scientist: records incl some corresp and research papers rel to data security and ciphers, work at National Physical Laboratory and interest in the history of cryptography 1936-2004 (B/Davies)
William Sydney Elliot, computer engineer: records incl corresp and papers rel to work at Imperial College and advisory and consultancy work for the Ministry of Technology and Ministry of Industry 1935-2000 (B/Elliot)
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