{"nrhp_refnum":"82004506","name":"Piedmont Springs Archeological Site","other_names":["Sulphur Springs","41gm44"],"category":"site","location":{"address":null,"address_restricted":true,"city":"Anderson","county":"Grimes County","state":"TX","lat":null,"lon":null,"geom_source":null},"listed_date":"1982-07-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Historic - Non-Aboriginal"],"significance_levels":["local"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/40972197","wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/texas/grimes-county/piedmont-springs-archeological-site-82004506/"}