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jonfholl: Enigma machine
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jonfholl: Hollerith 45 column horizontal electrical sorting machine
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jonfholl: Cybernetic tortoise
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jonfholl: Pilot Ace Computer
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jonfholl: Mansion and lake at Bletchley Park
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jonfholl: Another Enigma machine
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jonfholl: Britain and Europe together
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jonfholl: Turing's office at Bletchley Park