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Chicago River from DuSable Bridge, facing southwest
Western Maryland Scenic Railroad station [06]
Western Maryland Scenic Railroad tracks [03]
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Downtown Waynesboro, Virginia, looking toward Invista [02]
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Industrial waterfront in Camden, New Jersey [01]
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Delaware River between Camden and Philadelphia [04]
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Industrial waterfront in Camden, New Jersey [04]
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Industrial waterfront in Camden, New Jersey [03]
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Industrial waterfront in Camden, New Jersey [05]
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Industrial waterfront in Camden, New Jersey [02]
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Western Maryland Scenic Railroad bridge [03]
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Blue Bridge [01]
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Western Maryland Scenic Railroad bridge [01]
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Blue Bridge [02]
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US 17/US 70/NC 55 bridge over the Trent River [01]
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View of Atlantic City from the wind farm
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Spring Garden Swing Bridge [01]
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Hanover Street Bridge [01]
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Francis Scott Key Bridge [01]
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Spring Garden Swing Bridge [02]
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Hanover Street Bridge [02]
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Spring Garden Swing Bridge [03]
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Hanover Street Bridge [03]
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Francis Scott Key Bridge [03]
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Francis Scott Key Bridge [04]
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Spring Garden Swing Bridge [04]
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Hanover Street Bridge [04]
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Spring Garden Swing Bridge [05]
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Hanover Street Bridge [05]
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Francis Scott Key Bridge [05]
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Spring Garden Swing Bridge [06]
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Federal Signal Model 5 siren on the Hanover Street Bridge
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Francis Scott Key Bridge [06]
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Spring Garden Swing Bridge [07]
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Francis Scott Key Bridge [07]
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Spring Garden Swing Bridge [08]
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Francis Scott Key Bridge [08]
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Francis Scott Key Bridge [09]
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Delaware River between Camden and Philadelphia [05]
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Francis Scott Key Bridge [02]
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Parking lot at Penn's Landing [02]
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Parking lot at Penn's Landing [01]
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Point State Park [03]
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Interstate 376 in downtown Pittsburgh
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Aerial view of downtown Pittsburgh [02]
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Point State Park [02]
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End of the Monongahela River
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Panhandle Bridge
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Fort Pitt Bridge [01]
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Aerial view of downtown Pittsburgh [01]
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Fort Pitt Bridge [02]
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Point State Park [01]
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Fort Duquesne Bridge [01]
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Smithfield Street Bridge
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Pittsburgh skyline from Three Rivers Heritage Trail [01]
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Pittsburgh skyline from Three Rivers Heritage Trail [02]
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Roberto Clemente Bridge [01]
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Roberto Clemente Bridge [02]
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Roberto Clemente Bridge [03]
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Andy Warhol Bridge [01]
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Andy Warhol Bridge [02]
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Fort Duquesne Bridge [02]