{"nrhp_refnum":"81000548","name":"Haines Mill","other_names":["Haines Mill Museum"],"category":"building","location":{"address":"Walnut St. and Main Blvd.","address_restricted":false,"city":"Allentown","county":"Lehigh County","state":"PA","lat":40.585054900000046,"lon":-75.53171425399995,"geom_source":"nps_gis"},"listed_date":"1981-09-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Commerce"],"significance_levels":["local"],"summary":{"what_it_is":"Haines Mill is a four-story stone grist and flour mill with a three-story brick addition of 1930, located in Allentown, Lehigh County, Pennsylvania, now operated as a museum. The original structure is traditionally dated to before the Civil War, and the present building reflects a reconstruction after a fire of 1908.","why_significant":"The nomination argues that the mill is significant for its continuous milling use on a site dating to about 1760, and for its reconstruction after the 1908 fire, which turned it into a thoroughly modern small-scale flour mill. Its equipment remains intact and in operating condition, with the exception of the silk screen sifters, and it served local farmers and the nearby city of Allentown.","narrative":"Haines Mill is a four-story stone grist mill in Allentown, Lehigh County, Pennsylvania, with a three-story brick addition built on its east side in 1930. A mill has operated on the site since about 1760, and the present stone walls are traditionally dated to about 1840. A fire in 1908 led to a rebuilding that replaced the earlier undershot water wheel and grindstones with a stock water turbine driving a complete set of milling machinery. The rebuilt mill could grind wheat, oats and corn into flour and meal, and serve farmers in South Whitehall Township and Allentown. Much of its equipment, largely made of wood, remains intact and in operating condition, and visitors can see the mill's processes run on all four floors. The mill was in full production as late as 1957, and it is regarded as one of the few grist and flour mills in Lehigh County that still keeps its machinery working.","period_of_significance":"1908-1909","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Restored and converted into a museum in the 1974-1975 renovation, with equipment in operating condition.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:32.503287-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/81000548.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/81000548/38fd9da456-800.webp","url_1600":"https://nationalhistoricalregister.com/media/81000548/38fd9da456-1600.webp","licence":"CC BY-SA 3.0","author":"Shuvaev","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Haines_Mill_01.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:Haines_Mill_01.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994487","wikipedia":"https://en.wikipedia.org/wiki/Haines_Mill","wikidata":"https://www.wikidata.org/wiki/Q5639426"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lehigh-county/haines-mill-81000548/"}