{"nrhp_refnum":"13000256","name":"Mascot Roller Mills (Boundary Increase)","other_names":["Ressler's Mill"],"category":"building","location":{"address":"Jct. of Newport & Stumptown Rds. (Upper Leacock Township)","address_restricted":false,"city":"Mascot","county":"Lancaster County","state":"PA","lat":40.06378365450007,"lon":-76.15643015043604,"geom_source":"nps_gis"},"listed_date":"2013-05-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Industry"],"significance_levels":["local"],"summary":{"what_it_is":"A stone grist mill with an attached brick house, brick summer kitchen and small frame barn at Mascot, Upper Leacock Township, Lancaster County, Pennsylvania, at the southwest corner of Newport Road and Stumptown Road. The mill dates from the second quarter of the eighteenth century and was enlarged in stages to three stories.","why_significant":"The nomination argues the mill is significant as an intact example of a stone grist mill and as a monument to Lancaster County milling, being the oldest surviving grist mill there continuously operating on one site since the 1730s-1740s. Its roller machinery, installed in 1906, is believed to be the oldest surviving of its type in the county. The adjacent 1855 Groff House is described as preserved in pristine condition, including late nineteenth century paint colors.","narrative":"Built of local stone on a site beside Mill Creek in Upper Leacock Township, Lancaster County, Ressler's Mill was probably established around 1737 to 1740 and is traced by deeds to 1740. The mill rose from one story to three through several campaigns of building, and the visible changes in its masonry show that growth clearly. Its roller machinery, installed in 1906 by Strout, Waldron & Co. of Muncy, is believed to be the oldest of its type surviving in Lancaster County. The mill was a merchant mill in the mid-1800s and later a custom mill for nearby farmers, and the Mascot Post Office operated inside from 1882 to 1934. Beside it stands the brick house built for Daniel and Magdalena Groff in 1855, which keeps its painted exterior and original plan. Together these buildings form a rare, largely unaltered rural group, and the mill is one of the few survivors of many once on Mill Creek.","period_of_significance":"c. 1737/40-c. 1825","architect_builder":null,"architectural_style":null,"criteria":["A","C"],"status_note":"Ressler family ownership continued to the present; limited corn milling continues during warm months.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:10:26.982652-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/83002255.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lancaster-county/mascot-roller-mills-boundary-increase-13000256/"}