{"nrhp_refnum":"80003220","name":"Hedges-Hunter-Keller-Bacon Gristmill","other_names":["Pioneer Mill"],"category":"building","location":{"address":"255 Riverside Dr.","address_restricted":false,"city":"Tiffin","county":"Seneca County","state":"OH","lat":41.12368819400007,"lon":-83.17039826799999,"geom_source":"nps_gis"},"listed_date":"1980-01-07","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A grist mill complex on Riverside Drive in Tiffin, Ohio, founded in 1822 by Josiah Hedges beside the Sandusky River. The present two-story brick mill dates from a rebuilding in 1875, with later additions, and now houses a restaurant.","why_significant":"It was the first major industry in Tiffin and is the earliest of the city's surviving industrial buildings, representing Tiffin's early role as an agricultural center. The mill was also a social gathering place for farmers and for Native Americans from nearby reservations. Its 1974 conversion to a restaurant is cited as one of the city's most successful adaptive re-use projects.","narrative":"Founded in 1822 by Josiah Hedges, this grist mill beside the Sandusky River was the first major industry in Tiffin. It began grinding in 1824, and farmers and Native Americans from nearby reservations gathered there to exchange news while waiting for their grain. A fire destroyed the frame mill in 1874, and a brick building rose on the old foundation in 1875 under millwright Gustave Mathes. Ownership passed through the Hunter, Keller, Houser, Graves and Bacon families. Millstones gave way to a roller system in 1900, and a second fire in 1937 reduced the mill to two stories. Grinding ended in 1950, after which the building served as a machine shop, carpenter shop, tin shop and storage. In 1974 it became a restaurant, and gear shafts from the original mill decorate the interior. Turbines in the basement still draw power from the millrace. It is listed as the earliest of Tiffin's industrial buildings and as a successful adaptive re-use.","period_of_significance":"1800-1899, 1900-","architect_builder":"Josiah Hedges (founder); millwright Gustave Mathes (1875 rebuilding)","architectural_style":null,"criteria":[],"status_note":"In use as the Pioneer Mill Restaurant since 1974, with a gift shop, and still generating some power from the millrace and turbines. Condition is marked excellent, good and fair, and altered.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:12.001926-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/80003220.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003220/023a0121cd-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003220/023a0121cd-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Hedges-Hunter-Keller-Bacon_Gristmill.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Hedges-Hunter-Keller-Bacon_Gristmill.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71986158","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q138673411"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/seneca-county/hedges-hunter-keller-bacon-gristmill-80003220/"}