{"nrhp_refnum":"70000487","name":"Petersburg Mill","other_names":["Algonquin Steam Flouring Mills","Tope Flour Mills","Rutledege Fl"],"category":"building","location":{"address":"4.3 mi. S of Carrollton on OH 332","address_restricted":false,"city":"Carrollton","county":"Carroll County","state":"OH","lat":40.51276865600005,"lon":-81.11219158499995,"geom_source":"nps_gis"},"listed_date":"1970-11-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry"],"significance_levels":["local"],"summary":{"what_it_is":"A two-and-a-half-story grist and later roller flour mill at Petersburg, Union Township, on Ohio Route 332 about 4.3 miles south of Carrollton, Carroll County, Ohio. Deed records trace ownership to 1845, but the construction date is unknown.","why_significant":"The nomination presents the mill as typical rather than distinctive of thousands of small Ohio mills that supplied flour and feed in the nineteenth century. Its structure shows the change from water power to steam power after the Civil War. It is also described as one of only about 50 such mills of similar period and purpose left in Ohio, and it served as a commercial hub for the region.","narrative":"Petersburg Mill is a small flour and grist mill on Ohio Route 332, south of Carrollton in Carroll County. The main building measures 26 by 36 feet, rises two and a half stories above a full basement, and has hand-hewn beams and heavy timbers cut in an up-and-down sawmill, which suggests construction before the Civil War. It first ran on water from Little McGuire Creek, and the remains of the dam and race can still be traced. In the 1880s it was converted to a roller mill with a steam engine and boiler. John H. Miller bought it in 1917 and named it Algonquin Roller Mills, and it last operated in 1938. The mill was listed as a typical example of the thousands of small mills that fed Ohio communities in the nineteenth century. It drew customers from several counties, prompted a small settlement with a post office, and is one of about 50 comparable mills still standing in the state.","period_of_significance":"mid nineteenth century/1880's","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Condition is rated fair and altered. The mill last operated in 1938, and the original steam engine and boiler were scrapped just before World War II. The form lists the property as private.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:09.946901-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/70000487.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/70000487/fd0d3e00b2-800.webp","url_1600":"https://nationalhistoricalregister.com/media/70000487/fd0d3e00b2-1600.webp","licence":"Public domain","author":"Roseohioresident","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Algonquin_mill_petersburg_ohio002.jpg\" rel=\"noopener\">Roseohioresident</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Algonquin_mill_petersburg_ohio002.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71987013","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q137605355"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/carroll-county/petersburg-mill-70000487/"}