{"nrhp_refnum":"75001551","name":"Armco Park Mound II","other_names":[],"category":"site","location":{"address":null,"address_restricted":true,"city":"Otterbein","county":"Warren County","state":"OH","lat":null,"lon":null,"geom_source":null},"listed_date":"1975-05-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric"],"significance_levels":["local"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71991821","wikipedia":"https://en.wikipedia.org/wiki/Armco_Park_Mound_II","wikidata":"https://www.wikidata.org/wiki/Q4792943"},"indexable":false,"url":"https://nationalhistoricalregister.com/ohio/warren-county/armco-park-mound-ii-75001551/"}