The tourist guidebook that helped Nazis to blitz British cities

© Keystone/Getty Images1st May 1942:  A house in York is reduced to rubble by a World War II 'Baedeker' raid, one of a series of German air raids on British cities of cultural significance.
1st May 1942: A house in York is reduced to rubble by a World War II 'Baedeker' raid, one of a series of German air raids on British cities of cultural significance.

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