‘barrier’ historical pictures (exact matches)

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Offa, King of Mercia, watching his dyke being built, 8th Century
Offa, King of Mercia, watching his dyke being built, 8th Century
Chuck Yeager travelling faster than sound
Chuck Yeager travelling faster than sound
Roman Legionary in front of Hadrian's Wall, northern England
Roman Legionary in front of Hadrian's Wall, northern England