{"nrhp_refnum":"82003409","name":"Tuthilltown Gristmill","other_names":[],"category":"building","location":{"address":"Albany Post Rd.","address_restricted":false,"city":"Gardiner","county":"Ulster County","state":"NY","lat":41.68672989700008,"lon":-74.17520213499995,"geom_source":"nps_gis"},"listed_date":"1982-06-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A three-story timber frame water-powered grist mill on the Shawangunk Kill along Albany Post Road (U.S. Route 44) in Gardiner, Ulster County, New York, first built in 1788 and later enlarged. The nominated 1.4 acres include the mill, dam and mill race.","why_significant":"The nomination argues the mill is significant as a custom merchant mill in continuous commercial operation since the eighteenth century. Its dam, headrace and successive conversions to more efficient water power reflect the engineering history of rural New York grain mills. Its machinery represents vernacular milling technology of about 1880-1910, and it is the oldest operating grist mill in Ulster County.","narrative":"Water has turned the machinery of this three-story timber frame mill on the Shawangunk Kill in Gardiner, New York, since Selah Tuthill established it in 1788. Built on a fieldstone foundation under a gable roof with a clerestory monitor, it grew through several additions, including a one-story store added in 1943. Power came first from an undershot wheel, then an overshot wheel, and since 1900 from a Leffel water turbine. Four run of millstones once operated on the first floor, and the mill still holds its full set of stones, cranes, bagging chutes, fanning and bolting machines and conveyors, mostly installed in the late nineteenth century. Only one run of stones is now used commercially. The nominated 1.4 acres include the building, the dam and the mill race. The mill is described as the oldest operating grist mill in Ulster County and has continuously served local customers, with kosher flour as a specialty product.","period_of_significance":"1700-1799, 1800-1899, 1900- (specific dates: 1788, with additions)","architect_builder":null,"architectural_style":null,"criteria":["C"],"status_note":"Occupied and in good condition; still in commercial operation, grinding corn, rye and wheat from October to May, with one run of stones in use.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:42.121976-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/82003409.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/82003409/c3e370282f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/82003409/c3e370282f-1600.webp","licence":"CC BY-SA 3.0","author":"Nick Kaye","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Tuthillhouse.JPG\" rel=\"noopener\">Nick Kaye</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:Tuthillhouse.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75322749","wikipedia":"https://en.wikipedia.org/wiki/Tuthilltown_Gristmill","wikidata":"https://www.wikidata.org/wiki/Q7856932"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/ulster-county/tuthilltown-gristmill-82003409/"}