{"nrhp_refnum":"80003242","name":"Mackinaw Historic District","other_names":[],"category":"district","location":{"address":"Off OH 123","address_restricted":false,"city":"Franklin","county":"Warren County","state":"OH","lat":39.56389069450003,"lon":-84.30740929704362,"geom_source":"nps_gis"},"listed_date":"1980-07-21","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Community Planning and Development","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A residential historic district of about thirty architecturally significant buildings in a five-block area of West Franklin, Warren County, Ohio, on the west bank of the Great Miami River. The buildings date from 1847 to the early twentieth century, most of them late nineteenth-century frame houses.","why_significant":"The district illustrates the post-Civil War and late nineteenth-century period when Franklin saw major physical and economic growth, driven by paper mills, the hydraulic power canal, railroads, and the grain and lumber trade. Its houses were built largely by prominent local residents, and they show Queen Anne, Italianate, Stick, and Colonial Revival styles. The form marks the district as significant in architecture, economics, and industry.","narrative":"West of the Great Miami River in Franklin, Ohio, a five-block residential neighborhood holds about thirty notable houses built between 1847 and the early twentieth century. Most are frame buildings from the late 1800s, and few have been greatly altered. Styles include Queen Anne, Italianate, French Second Empire, Shingle, Stick, and Colonial Revival. The oldest survivors, the Chamberlain house of 1847 with its cast iron portico and the Anderson farmhouse of about 1860, date from the early farming settlement on the west bank. Development accelerated after a railroad reached Franklin in 1887 and Lewis G. Anderson and others platted the Mackinaw Subdivision. Many houses were built between 1887 and 1893 for prominent townspeople tied to Franklin's paper mills, grain and lumber trade, and other industries. The district is valued for its architecture and for what it shows of the town's economic growth after the Civil War.","period_of_significance":"1800-1899 and 1900- (specific dates not given)","architect_builder":null,"architectural_style":"Mixed late 19th and early 20th century residential styles: Queen Anne, Italianate, French Second Empire, Shingle, Stick, Eastlake, Colonial Revival, Georgian Revival","criteria":[],"status_note":"Condition is rated excellent to good, with few buildings having undergone major alterations. Some properties are occupied as private residences, and one is a museum.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:12.188277-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/80003242.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003242/20a11dba72-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003242/20a11dba72-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Mackinaw_Historic_District.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Mackinaw_Historic_District.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71991853","wikipedia":"https://en.wikipedia.org/wiki/Mackinaw_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q24061429"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/warren-county/mackinaw-historic-district-80003242/"}