{"nrhp_refnum":"10000405","name":"Colebrook Iron Master's House","other_names":["Colebrook Mansion","Colebrook Estate"],"category":"building","location":{"address":"5200 Elizabethtown Rd","address_restricted":false,"city":"South Londonderry","county":"Lebanon County","state":"PA","lat":40.23994438100004,"lon":-76.51247705399999,"geom_source":"nps_gis"},"listed_date":"2010-06-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A brownstone house and domestic outbuilding complex in the village of Colebrook, South Londonderry Township, Lebanon County, Pennsylvania, on the southwest corner of Manheim Road and Elizabethtown Road. It was built as the residence associated with the Colebrook Iron Furnace, established by iron master Robert Coleman in 1791.","why_significant":"The nomination argues the house and its grouped outbuildings, including the stable, kitchen house, spring house, privy, carriage shed and cast iron fence, represent a functional and well-crafted example of late Georgian architecture in rural Lebanon County. The complex is described as stylistically coordinated and largely retains its eighteenth-century setting and feeling.","narrative":"Built of locally quarried brownstone in the late Georgian style, the house at Colebrook stands on the southwest corner of Manheim and Elizabethtown Roads in South Londonderry Township, Lebanon County. Its construction dates to about 1791 to 1796, with the original two-and-a-half-story block completed first and a south addition following. The house, a half-Georgian double-pile plan with symmetrical six-over-six windows and a fanlight entrance, is grouped with a stable, kitchen house, spring house, privy and carriage shed. A cast iron fence encloses much of the grouping. The complex was built to serve the Colebrook Furnace, which was established in 1791 and whose furnace stack and industrial buildings were removed by 1860. The house is regarded as a locally significant example of late Georgian design, and its surviving group of eighteenth-century domestic buildings is the main reason for its listing.","period_of_significance":"Ca. 1791-1796","architect_builder":null,"architectural_style":"Colonial/Georgian","criteria":["C"],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:10:27.088633-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/10000405.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/10000405/f198f082bc-800.webp","url_1600":"https://nationalhistoricalregister.com/media/10000405/f198f082bc-1600.webp","licence":"CC BY-SA 3.0","author":"JoeRed","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Colebrook_Iron_Master_House.jpg\" rel=\"noopener\">JoeRed</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:Colebrook_Iron_Master_House.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71998198","wikipedia":"https://en.wikipedia.org/wiki/Colebrook_Iron_Master%27s_House","wikidata":"https://www.wikidata.org/wiki/Q5142708"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lebanon-county/colebrook-iron-masters-house-10000405/"}