Operation Pastorius
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Horseshoe Curve (Pennsylvania)
Keystone Corridor
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Philadelphia and Columbia Railroad
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Herman Haupt
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Gap (landform)
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Double-track railway
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List of Pennsylvania railroads
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John Edgar Thomson
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1854 in rail transport
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1954 in rail transport
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Horseshoe curve
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Allegheny Front
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Altoona Curve
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Allegheny Portage Railroad
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Kittanning Gap
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Kittanning Path
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List of Historic Civil Engineering Landmarks
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Hairpin turn
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Allegheny Mountains
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Three Rivers (train)
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Pennsylvania Railroad
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Penn Central Transportation Company
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Gallitzin, Pennsylvania
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Logan Township, Blair County, Pennsylvania
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Altoona, Pennsylvania
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Pennsylvania
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