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rca55319: Duluth Bridge Yard
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rca55319: Duluth Bridge Yard
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rca55319: Duluth Bridge Yard
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rca55319: Walter A. Sterling at the Duluth piers
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rca55319: John G. Munson at Cutler Magner Dock Superior Wisconsin
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rca55319: Ripping up the NP Main in Duluth
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rca55319: DETROIT EDISON's last season on the Great Lakes