{"nrhp_refnum":"77000977","name":"Burden Iron Works Site","other_names":["Burden Upper Works Site"],"category":"site","location":{"address":null,"address_restricted":true,"city":"Troy","county":"Rensselaer County","state":"NY","lat":42.7099,"lon":-73.699,"geom_source":"wikidata"},"listed_date":"1977-11-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Historic - Non-Aboriginal","Engineering","Invention"],"significance_levels":["national"],"summary":null,"photo":{"url_800":"https://nationalhistoricalregister.com/media/77000977/1138bc9e81-800.webp","url_1600":"https://nationalhistoricalregister.com/media/77000977/1138bc9e81-1600.webp","licence":"Public domain","author":"Historic American Engineering Record","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Burden_Wheel.png\" rel=\"noopener\">Historic American Engineering Record</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Burden_Wheel.png"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75321183","wikipedia":"https://en.wikipedia.org/wiki/Burden_Iron_Works","wikidata":"https://www.wikidata.org/wiki/Q4998264"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/rensselaer-county/burden-iron-works-site-77000977/"}