{"nrhp_refnum":"100012126","name":"Heller-Wagner Grist Mill (Hellertown)","other_names":["Wagner Grist Mill"],"category":"building","location":{"address":"150 W. Walnut St.","address_restricted":false,"city":"Hellertown","county":"Northampton County","state":"PA","lat":40.57210900000007,"lon":-75.34351299999997,"geom_source":"nps_gis"},"listed_date":"2025-08-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry"],"significance_levels":["local"],"summary":null,"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/pennsylvania/northampton-county/heller-wagner-grist-mill-hellertown-100012126/"}