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Manufactured By:
Charles. T. Porter; Porter-Allen Engine Co.
New York, NY; Newark, NJ

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Title: 1860 ad - Porter's improved centrifugal governor
Source: 1860-04-21 American Railroad Journal page 339
Insert Date: 6/21/2024 2:14:10 PM

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Image 1
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Sideways, for ease of viewing the drawing of the governor
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