{"nrhp_refnum":"66000505","name":"Wood, Jethro, House","other_names":[],"category":"building","location":{"address":"NY 34B","address_restricted":false,"city":"Poplar Ridge","county":"Cayuga County","state":"NY","lat":42.73765207000005,"lon":-76.63225254450026,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":true,"nhl_designated_date":"1964-07-19","areas_of_significance":["Invention","Agriculture"],"significance_levels":["national"],"summary":{"what_it_is":"A two-story frame farmhouse on Poplar Ridge Road at Poplar Ridge, Cayuga County, New York, built circa 1800 by Jethro Wood as the main house of his farm.","why_significant":"Jethro Wood lived and worked here while developing and patenting his cast-iron plow with interchangeable parts (patents of 1814 and 1819). The improved moldboard design gave cleaner plowing, and standardized parts could be replaced individually. Wood's plow was widely adopted, especially in the North, and earned him recognition as a major benefactor of American agriculture.","narrative":"This two-story frame farmhouse near Poplar Ridge, New York, was built around 1800 by Jethro Wood, who farmed in Cayuga County and spent much of his adult life experimenting with plow design. The house uses a barn-like framing method, with hand-hewn vertical posts mortised and pinned to long plates that remain visible in the attic. It now has white aluminum siding, a shingled gable roof and a rubblestone foundation. Wood patented cast-iron plows in 1814 and 1819. The second model improved the moldboard for cleaner furrows and used three standardized parts, the moldboard, landside and share, so a farmer could replace one damaged piece rather than buy a whole plow. Although others in Britain and Virginia had earlier or parallel ideas, Wood's version gained wide acceptance, especially in the North. He spent heavily defending his patent against imitators. The house is recognized as the home where this work took place.","period_of_significance":"1800-1834","architect_builder":"Jethro Wood","architectural_style":null,"criteria":[],"status_note":"Described as in good condition and minor alterations; house is presently vacant and the owner is contemplating its sale. Barn moved and replaced; woodshed converted to a garage.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.292998-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/66000505_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000505/d10e8ba7d4-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000505/d10e8ba7d4-1600.webp","licence":"CC BY-SA 3.0","author":"Lvklock","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:JethroWoodHouse.jpg\" rel=\"noopener\">Lvklock</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:JethroWoodHouse.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75315655","wikipedia":"https://en.wikipedia.org/wiki/Jethro_Wood_House","wikidata":"https://www.wikidata.org/wiki/Q6189033"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/cayuga-county/wood-jethro-house-66000505/"}