M42 at Grand Central Terminal was targeted by Hitler and the Nazis during WWII | Daily Mail Online
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M42 at Grand Central Terminal was targeted by Hitler and the Nazis during WWII | Daily Mail Online
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Inside the Clandestine M42 Basement Deep Under Grand Central Terminal - Untapped New York
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Grand Central station's secret basement: Learn why it was a shoot-to-kill World War II secret. (VIDEO).
M42 (sub-basement) - Wikipedia
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Inside the Clandestine M42 Basement Deep Under Grand Central Terminal - Untapped New York
