gc&cs

  1. Seaweed

    Alastair Denniston by Joel Greenberg

    This is much more than a biography of Alexander ('Alastair') Guthrie Davidson ('AGD'), 1881-1961, wheelhorse of the British Signal Intelligence (SIGINT) effort at the start of Hitler's War. It is also the story of SIGINT itself from 1914 onwards. It starts with the WW1 story of Room 40 under...

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