{"nrhp_refnum":"100003309","name":"Deerfield","other_names":["Willow Brook","Beaulieu","DHR #s030-5439, 030-5438-0002. 053-6087-0256"],"category":"district","location":{"address":"9009 John S. Mosby Hwy.","address_restricted":false,"city":"Upperville","county":"Fauquier County","state":"VA","lat":38.98653000000007,"lon":-77.87724044162434,"geom_source":"nps_gis"},"listed_date":"2019-01-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Military"],"significance_levels":["local"],"summary":null,"photo":null,"district":{"nrhp_refnum":"11000835","name":"Unison Battlefield Historic District","url":"https://nationalhistoricalregister.com/districts/virginia/unison-battlefield-historic-district-11000835/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/virginia/fauquier-county/deerfield-100003309/"}