{"nrhp_refnum":"79001791","name":"Marquart-Mercer Farm","other_names":[],"category":"building","location":{"address":"SW of Springfield","address_restricted":false,"city":"Springfield","county":"Clark County","state":"OH","lat":39.85599330000005,"lon":-83.8295096547105,"geom_source":"nps_gis"},"listed_date":"1979-07-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Agriculture"],"significance_levels":["local"],"summary":{"what_it_is":"A Federal-style, two-story brick farmhouse with a one-story extension and a log double-pen barn, on a hilltop farm in Green Township southwest of Springfield, Clark County, Ohio. The house dates from about 1827 and was built by Philip Marquart.","why_significant":"The farm is presented as an excellent, little-altered example of an early Clark County farmstead. The Federal house, with its oval gable windows and well-preserved interior trim, is called an unusually fine example of very early Ohio farm architecture. The double-pen log barn is noted as a very early log structure still in active use. The form also traces ownership from the Marquart family to the Mercer family.","narrative":"This farm southwest of Springfield in Green Township, Clark County, centers on a two-story Federal brick house with a one-story extension, plus a log double-pen barn about 200 feet to the northwest. Philip Marquart, who came from Pennsylvania in the early 1800s, bought land in the area and built a log cabin before the brick house. A tax record from 1827 first indicates a farmhouse on the site, and the brickwork supports a date before 1835. The extension followed within roughly a decade. The front wall is laid in Flemish bond, and the house has oval gable windows and original Federal mantels and trim inside. The Marquart family farmed and dealt in livestock, and the property passed to the Mercer family in 1879. Sparrow Road takes its name from a farmer who worked the land in 1854. The farm is valued as a rare early farmstead still in a natural setting, still farmed, with both main buildings little altered.","period_of_significance":"1800-1899","architect_builder":"Philip Marquart","architectural_style":"Federal","criteria":[],"status_note":"Interior in good condition; farm still used as a farm, with the house and barn little altered. A modern garage and outbuildings are in the farmyard, and the airport lies to the south.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:12.583445-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/79001791.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79001791/042b64cc71-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79001791/042b64cc71-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Marquart-Mercer_Farm_from_the_north.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Marquart-Mercer_Farm_from_the_north.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71987044","wikipedia":"https://en.wikipedia.org/wiki/Marquart-Mercer_Farm","wikidata":"https://www.wikidata.org/wiki/Q28147968"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/clark-county/marquart-mercer-farm-79001791/"}