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Sheffield Blitz - Wikipedia
The Blitz - Wikipedia
Sheffield Blitz research guide
BBC - Sheffield Blitz: 70 years on from the devastating bombs
The Sheffield Blitz - 80 Year Anniversary Special - YouTube
The Blitz | World War II, History, & Facts | Britannica
WW2 People's War - Sheffield Blitz - BBC
The Blitz Around Britain - World War 2 | Imperial War Museums
WW2 People's War - The Sheffield Blitz, 12 December 1940 - BBC
Sheffield Blitz - Wikiwand