{"nrhp_refnum":"100000856","name":"Marcus Hook Plank House","other_names":[],"category":"site","location":{"address":"221 Market St.","address_restricted":false,"city":"Marcus Hook","county":"Delaware County","state":"PA","lat":null,"lon":null,"geom_source":null},"listed_date":"2017-04-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Exploration/Settlement","Archeology","Historic - Non-Aboriginal"],"significance_levels":["local"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/pennsylvania/delaware-county/marcus-hook-plank-house-100000856/"}