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Blackout (wartime) - Wikipedia
The Surprising History of Blackout Curtains | Blinds.com
The Dark History of Blackout Curtains | Strickland's Home
The Blackout in the Second World War - Spartacus Educational
Life during the blackout | Life and style | The Guardian
Wartime Blackouts: From Drills to Reality | PearlHarbor.org
Busy With The Blitz-Proofing - America in WWII
The Blackout of World War 2: Facts and Information
BBC - WW2 People's War - The Blackout
BBC - WW2 People's War - Blackout Curtains