{"nrhp_refnum":"77001177","name":"Sunrise Mill","other_names":[],"category":"building","location":{"address":"3 mi. W of Schwenksville on Neiffer Rd.","address_restricted":false,"city":"Schwenksville","county":"Montgomery County","state":"PA","lat":40.27339299300007,"lon":-75.51984807399998,"geom_source":"nps_gis"},"listed_date":"1977-04-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Health/Medicine"],"significance_levels":["local"],"summary":{"what_it_is":"A former water-powered milling complex on the headwaters of the Perkiomen Creek in Schwenksville, Montgomery County, Pennsylvania, comprising a three-story grist mill, an attached saw mill, a farmhouse and a Swiss bank barn. The grist mill was constructed in 1819, and the barn is dated to 1795.","why_significant":"The nomination argues the site illustrates Upper Montgomery County's role as a leading industrial area in the Delaware Valley between the late eighteenth and mid-nineteenth centuries, when water power, local raw materials and a ready Philadelphia market supported milling. It also cites the farmhouse as the home of Dr. Chevalier Jackson, a physician internationally known for esophagoscopy and his invention of the bronchoscope, whose workshops and papers are associated with the property.","narrative":"Along the headwaters of the Perkiomen Creek near Schwenksville stands a complex of mill buildings built around water power. The grist mill, a three-story stone structure with stucco covering, dates from 1819 and retains machinery spanning roughly 1819 to about 1900, including three iron turbines seated in the mill race. An attached saw mill, of timber and rough siding, is in a far worse state. Nearby are a brick farmhouse of the bank type, built into the hillside, that dates from about 1830 to 1840, and a cantilevered forebay Swiss bank barn dated to 1795, which is in excellent condition. The site also includes a mill dam, a mill pond, and a stone arch bridge from about 1850. The property is significant for illustrating the industrial character of Upper Montgomery County between the late eighteenth and mid-nineteenth centuries, when water-powered milling flourished in the region. It is also tied to Dr. Chevalier Jackson, the physician known for his work in esophagoscopy and the bronchoscope, whose workshops and papers are linked to the site.","period_of_significance":"1800-1899","architect_builder":null,"architectural_style":"Federal period","criteria":["A","B","C"],"status_note":"The grist mill roof was recently replaced with a temporary roof, the saw mill roof has rotted and fallen in, and the mill site is described as having no encroachment by suburbanizing development at the time of the nomination.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:13:04.662488-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/77001177.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/77001177/cb19a61e53-800.webp","url_1600":"https://nationalhistoricalregister.com/media/77001177/cb19a61e53-1600.webp","licence":"CC BY-SA 2.0","author":"Montgomery County Planning Commission","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Sunrise_Mill_in_January.jpg\" rel=\"noopener\">Montgomery County Planning Commission</a>, <a href=\"https://creativecommons.org/licenses/by-sa/2.0\" rel=\"license noopener\">CC BY-SA 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Sunrise_Mill_in_January.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71998075","wikipedia":"https://en.wikipedia.org/wiki/Sunrise_Mill","wikidata":"https://www.wikidata.org/wiki/Q7641104"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/montgomery-county/sunrise-mill-77001177/"}