{"nrhp_refnum":"78000464","name":"Dalton House","other_names":["Dalton Club"],"category":"building","location":{"address":"95 State St.","address_restricted":false,"city":"Newburyport","county":"Essex County","state":"MA","lat":42.80810819700008,"lon":-70.87120049099997,"geom_source":"nps_gis"},"listed_date":"1978-03-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Politics/Government","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A three-story Georgian house at 95 State Street, at the corner of State and Garden Streets in commercial Newburyport, Massachusetts, built around 1747 by merchant Michael Dalton. It is now used as a social club.","why_significant":"The nomination argues the house is significant for its elegant Georgian architecture and for the prominent people associated with it. Tristram Dalton, who lived there, was a Revolutionary-era merchant, state legislator and one of the first U.S. senators from Massachusetts. The house also hosted many notable figures of the period.","narrative":"Dalton House is a three-story, L-plan Georgian dwelling with a gambrel roof at the corner of State and Garden Streets in Newburyport. Michael Dalton, a master mariner turned merchant, bought the land in 1746 and built the house about 1747. The west facade is rusticated woodblock, with a five-bay front, a center entrance framed by engaged Corinthian columns, a modillioned cornice and five pedimented dormers. Inside are a paneled front hall, a straight stair with turned balusters, and fine woodwork in the parlors and a second-floor card room. The house is significant for its architecture and its owners. Michael's son Tristram Dalton served on town committees, in the Provincial Congress, as speaker of the Massachusetts House, and as a United States senator. During the Revolution he helped outfit two warships at Newburyport. Visitors reportedly included George Washington, Thomas Jefferson and John Hancock. The Dalton Club bought the house in 1897 and still uses it.","period_of_significance":"1746-48","architect_builder":"Michael Dalton","architectural_style":"Georgian","criteria":[],"status_note":"Occupied and in good condition; used as a social club (Dalton Club) since 1897, with some interior alterations for club use.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:54.405384-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/80/7947/63794780/content/electronic-records/rg-079/NPS_MA/78000464.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78000464/2132b86f71-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78000464/2132b86f71-1600.webp","licence":"CC BY-SA 3.0","author":"Magicpiano","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:NewburyportMA_DaltonHouse.jpg\" rel=\"noopener\">Magicpiano</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:NewburyportMA_DaltonHouse.jpg"},"district":{"nrhp_refnum":"84002411","name":"Newburyport Historic District","url":"https://nationalhistoricalregister.com/districts/massachusetts/newburyport-historic-district-84002411/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63794780","wikipedia":"https://en.wikipedia.org/wiki/Dalton_House_(Newburyport,_Massachusetts)","wikidata":"https://www.wikidata.org/wiki/Q5211696"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/essex-county/dalton-house-78000464/"}