{"nrhp_refnum":"02000476","name":"Willow Mill Complex","other_names":["Shaw-Leedom House and Mill","Sager, Howard, House and Mill"],"category":"building","location":{"address":"570, 559, and 569 Bustleton Pike","address_restricted":false,"city":"Richboro","county":"Bucks County","state":"PA","lat":40.19934053950004,"lon":-75.01029532713157,"geom_source":"nps_gis"},"listed_date":"2002-05-09","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A rural industrial and residential complex in Northampton Township, Bucks County, Pennsylvania, on Bustleton Pike, comprising the Shaw-Leedom house, a spring/smoke house, the Sager house, a wagon house and the Willow Mill. The Shaw-Leedom house dates to about 1800 and the Sager house was built in 1847, with the mill rebuilt in the 1840s.","why_significant":"The complex is argued to be significant under Criterion A for its association with grain milling in Northampton Township and Bucks County in the late eighteenth and nineteenth centuries, and under Criterion C for its stone vernacular Federal-style architecture and its intact mill and house group. The nomination treats the Sager house, with its keystone-and-stone-lintel window arrangement and Dutch Stoop wing, as a distinctive local example of the work of builder Cornelius McKinney. It also notes that the complex is well preserved compared with the other surviving mills in the township.","narrative":"Willow Mill is a group of stone buildings on Bustleton Pike in Northampton Township, Bucks County, split by the road. The Shaw-Leedom house, built about 1800 in the Federal style, sits on a rise above Iron Works Creek with a spring house nearby. Across the road stand the Sager house, dated 1847 by an inscribed lintel, the wagon house and a four-story stone grist mill rebuilt in the 1840s on the site of a mill first established about 1739 by John and Joseph Shaw. The mill ran continuously as a milling business for well over a century, producing flour, flax oil and sawn lumber. The complex is significant for its ties to the grain milling economy of Bucks County and for its vernacular stone architecture, including the Sager house keystone lintels and the Dutch Stoop kitchen wing. Its original setting and buildings remain largely intact.","period_of_significance":"C. 1740-1905","architect_builder":"Shaw, Joseph (mill founder, 1739 mill); McKinney, Cornelius (builder, Sager house)","architectural_style":"Federal","criteria":["A","C"],"status_note":"Mill converted to residential use in 1938 and used for mushroom growing and as a residence in the twentieth century; Shaw-Leedom and Sager houses remained residential.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.054454-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/02000476.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/02000476/887efbf317-800.webp","url_1600":"https://nationalhistoricalregister.com/media/02000476/887efbf317-1600.webp","licence":"CC BY-SA 3.0","author":"Shuvaev","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Willow_Mill_Shaw-Leedom_House.JPG\" rel=\"noopener\">Shuvaev</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Willow_Mill_Shaw-Leedom_House.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71997988","wikipedia":"https://en.wikipedia.org/wiki/Willow_Mill_Complex","wikidata":"https://www.wikidata.org/wiki/Q8022335"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/bucks-county/willow-mill-complex-02000476/"}