Matthew Boulton, English Manufacturer
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Matthew Boulton English Manufacturer #1
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Matthew Boulton 1728-1809, English
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Watts First Experiment, 18th Century
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James Watts Workshop At Heathfield
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James Watts Prototype Steam Engine Old
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James Watt, Scottish Engineer #4
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James Watt, Scottish Engineer
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James Watt, Scottish Engineer #2
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James Watt, Scottish Engineer #3
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