{"nrhp_refnum":"77000192","name":"Winthrop, John, Jr., Iron Furnace Site","other_names":["Braintree Furnace"],"category":"site","location":{"address":null,"address_restricted":true,"city":"Quincy","county":"Norfolk County","state":"MA","lat":42.245778,"lon":-71.027083,"geom_source":"wikidata"},"listed_date":"1977-09-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Historic - Non-Aboriginal"],"significance_levels":["state"],"summary":null,"photo":{"url_800":"https://nationalhistoricalregister.com/media/77000192/b2980f9afa-800.webp","url_1600":"https://nationalhistoricalregister.com/media/77000192/b2980f9afa-1600.webp","licence":"CC BY-SA 3.0","author":"Jameslwoodward","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:John_Winthrop_Jr_Iron_Furnace_Site_Quincy_MA_01.jpg\" rel=\"noopener\">Jameslwoodward</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:John_Winthrop_Jr_Iron_Furnace_Site_Quincy_MA_01.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63796204","wikipedia":"https://en.wikipedia.org/wiki/John_Winthrop_Jr._Iron_Furnace_Site","wikidata":"https://www.wikidata.org/wiki/Q6264657"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/norfolk-county/winthrop-john-jr-iron-furnace-site-77000192/"}