{"nrhp_refnum":"100004853","name":"Colby-Petersen Farm","other_names":["Colby Farm","Historic Petersen Farm"],"category":"district","location":{"address":"4112 McCullom Lake Rd.","address_restricted":false,"city":"McHenry","county":"McHenry County","state":"IL","lat":42.36250000000007,"lon":-88.27841699999999,"geom_source":"nps_gis"},"listed_date":"2020-03-13","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Agriculture","Architecture"],"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/illinois/mchenry-county/colby-petersen-farm-100004853/"}