{"nrhp_refnum":"04000468","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":40.029124886000034,"lon":-75.63298981699995,"geom_source":"nps_gis"},"listed_date":"2004-05-19","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A small water-powered gristmill and an adjacent miller's house in West Whiteland Township, Chester County, Pennsylvania, now on the grounds of a car dealership off the Lincoln Highway. The mill dates to 1744 and the house to c. 1835.","why_significant":"The nomination argues the mill is a rare surviving example of interrupted sill timber framing, an English technique seldom used in North America, and that it is the only framed mill surviving in Chester County. The Miller's House is regarded as a representative example of the double-cell house plan common in southeastern Pennsylvania. Both buildings retain enough design, materials and workmanship to be considered significant despite relocation of the house and loss of setting.","narrative":"Built in 1744 by Richard Thomas II, the Thomas Mill is a coursed rubble stone and timber-framed gristmill on Valley Creek in West Whiteland Township, Chester County. Its wall posts rest directly on the foundation in an interrupted sill arrangement, a framing method of English origin that is rarely found in North America. A date carved into a roof timber confirms the construction year. Much of the 19th-century grinding equipment and a cast iron overshot waterwheel remain in the building. The adjacent Miller's House, built around 1835 as a tenant house for the miller, is a two-and-a-half-story stone dwelling with a double-cell plan. It has two rooms stacked one behind the other, a central staircase, and gable-end fireplaces, with decorative Federal-style mantels in the first-floor rooms. The house was moved about 200 feet in 2001 when the surrounding land was developed into a car dealership. The property is significant for the mill's construction and the house's plan.","period_of_significance":"C. 1744-c. 1835","architect_builder":null,"architectural_style":"Postmedieval English; Federal","criteria":["C"],"status_note":"The mill remains in its original location and in working order with much of its milling machinery; the house was moved about 200 feet in 2001 during redevelopment of the site.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:37.318822-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/04000468.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/04000468/62af5d4a24-800.webp","url_1600":"https://nationalhistoricalregister.com/media/04000468/62af5d4a24-1600.webp","licence":"Public domain","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Thomas_Millers_House_Chesco_PA.JPG\" rel=\"noopener\">Smallbones</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Thomas_Millers_House_Chesco_PA.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992593","wikipedia":"https://en.wikipedia.org/wiki/Thomas_Mill_and_Miller%27s_House","wikidata":"https://www.wikidata.org/wiki/Q115806054"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/thomas-mill-and-millers-house-04000468/"}