{"nrhp_refnum":"100006913","name":"Ontario Baseball Park","other_names":["Jay Littleton Ball Park","John Galvin Park Baseball Field"],"category":"building","location":{"address":"SE of North Grove Ave. and East 4th St. intersection (NE corner John Galvin Park)","address_restricted":false,"city":"Ontario","county":"San Bernardino County","state":"CA","lat":34.07644300000004,"lon":-117.62802299999998,"geom_source":"nps_gis"},"listed_date":"2021-09-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Entertainment/Recreation","Social History"],"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/california/san-bernardino-county/ontario-baseball-park-100006913/"}