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This illustration dates to the 1870s and shows Nasmyth's Steam Hammer. James Nasmyth was a Scottish
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This illustration dates to the 1870s and shows Nas...

Fowler's double-furrow plough with single lever.
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Fowler's double-furrow plough with single lever.

Man operating a pulley with a lever and fulcrum.
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Man operating a pulley with a lever and fulcrum.

Railroad Yard Switch Man
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Railroad Yard Switch Man

Automatic Voting Machine
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Automatic Voting Machine

History by Polybius, Volume I
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History by Polybius, Volume I

History by Polybius, Volume II
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History by Polybius, Volume II

Operating a Boring Machine 1914
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Operating a Boring Machine 1914

Diver Takes Time Off To Vote
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Diver Takes Time Off To Vote