{"nrhp_refnum":"84003310","name":"Thomas Mill and Miller's House","other_names":[],"category":"building","location":{"address":"130 W. Lincoln Hwy.","address_restricted":false,"city":"West Whiteland","county":"Chester County","state":"PA","lat":40.026195364000046,"lon":-75.6333089751673,"geom_source":"nps_gis"},"listed_date":"1984-09-06","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"The Thomas Mill and Miller's House is a complex of a stone and frame grist mill and a masonry dwelling on about 12 acres in West Whiteland Township, Chester County, Pennsylvania, just south of Lincoln Highway (U.S. Route 30). The mill bears the date 1744.","why_significant":"The nomination argues the mill is eligible for its association with the Thomas family, who were early settlers of the township, and for its use of archaic building traditions. It describes the mill as having no parallel example in the mid-Atlantic region, with an interrupted sill and flat double studs that were uncommon after about 1700. The associated house is said to retain the older Penn Plan form into the early nineteenth century.","narrative":"Built in 1744 on a stream south of Lincoln Highway in West Whiteland Township, Chester County, the Thomas Mill is a grist mill with a masonry first floor and a frame upper story, set beside a water wheel fed by an elevated race. Its framing uses an interrupted sill, with uprights resting directly on the masonry wall, and studs laid flat in pairs. The original grinding works were replaced in the mid-nineteenth century, but one original sack hoist roller survives and the machinery was judged capable of operating again. The mill is regarded as a rare survivor of an early period when mills in southeast Pennsylvania were built of temporary materials. Beside it stands a masonry house of about 1820 in a modified Penn Plan, built as a tenant dwelling for the miller. The mill remained with the Thomas family and operated into the twentieth century, last as a feed mill.","period_of_significance":"1744-1832","architect_builder":null,"architectural_style":"Vernacular","criteria":["B","C"],"status_note":"Not in use","vacant_flag":true,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:33.295697-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/84003310.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992621","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/thomas-mill-and-millers-house-84003310/"}