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great britain naval intelligence division

Very special intelligence

By Patrick Beesly

Room 40

By Patrick Beesly

Very special intelligence

By Patrick Beesly

Room 39

By Donald McLachlan

Philosopher at the Admiralty

By Steve Mascaro,Kevin B. Korb,Anne Nicholson,Woodberry E,Peter Johnson

Blinker Hall Spymaster

By Ramsay