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Furness Library National Historic Landmark, Philadelphia, PA
2 / 12
Lightfoot Mill National Historic Landmark, Chester Springs, PA
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National Road, OH
4 / 12
Casselman River Bridge, National Road, MD
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Olana (Frederick E. Church House National Historic Landmark), Hudson, NY
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Catskills Over The Hudson, Clermont National Historic Landmark, NY
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Olana (Frederick E. Church House National Historic Landmark), Hudson, NY
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National Road, OH
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Wilson Bridge, National Road, MD
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Olana (Frederick E. Church House National Historic Landmark), Hudson, NY
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Carrollton Viaduct National Historic Landmark, Baltimore, MD
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Minor Basilica of the Assumption of the Blessed Virgin Mary National Historic Landmark, Baltimore, MD