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Jon R. Roma: Lenox operator and machine
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Jon R. Roma: Lenox interlocking machine interior
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Jon R. Roma: Lenox model board
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Jon R. Roma: Lenox model board
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Jon R. Roma: Lenox model board
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Jon R. Roma: North Lenox control machine
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Jon R. Roma: Lenox machine and model board
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Jon R. Roma: Lenox ammeter
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Jon R. Roma: North Lenox control machine
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Jon R. Roma: Lenox model board
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Jon R. Roma: Lenox time releases
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Jon R. Roma: Lenox manipulation chart
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Jon R. Roma: Lenox model board
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Jon R. Roma: Lenox operator at desk
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Jon R. Roma: Lenox operator at desk