‘Blinker’ Hall: Spymaster, The Man who Brought America into World War I by David Ramsay
Published by History Press Limited on April 1st 2010
Genres: Biography & Autobiography, Military, History, World War I, Naval
Len's Summary: The story of the British Director of Naval Intelligence and Room 40 which broke the German naval and diplomatic codes revealing to Woodrow Wilson the infamous Zimmerman Telegram. Also available in hard cover.