{"nrhp_refnum":"71000177","name":"Joe Mound","other_names":["4-Sac-31"],"category":"site","location":{"address":null,"address_restricted":true,"city":"Sacramento","county":"Sacramento County","state":"CA","lat":null,"lon":null,"geom_source":null},"listed_date":"1971-10-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric","Historic - Aboriginal","Historic - Non-Aboriginal"],"significance_levels":["state"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860617","wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/california/sacramento-county/joe-mound-71000177/"}