{"nrhp_refnum":"95000121","name":"Glassworks-Core House","other_names":["Building 302-B (Army Corps Historic Buildings Survey)"],"category":"building","location":{"address":"PA 2014, Monongahela Township","address_restricted":false,"city":"Glassworks","county":"Greene County","state":"PA","lat":39.80012543500004,"lon":-79.91312263899994,"geom_source":"nps_gis"},"listed_date":"1995-07-27","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry"],"significance_levels":["local"],"summary":{"what_it_is":"A three-bay, two-and-a-half story timber frame house in the village of Glassworks, about a quarter mile north of Greensboro in Greene County, Pennsylvania. The main block is built in the vernacular I house style and dates to c. 1820.","why_significant":"The nomination argues the house is associated with the early glass industry, since the main block was built on land owned by the New Geneva Glassworks Company. It is described as one of four surviving houses linked to the early glass industry in southwestern Pennsylvania and as a good example of a small early nineteenth-century vernacular house.","narrative":"Built around 1820 in the village of Glassworks, about a quarter mile north of Greensboro, this three-bay, two-and-a-half story timber frame house follows the vernacular I house form. Its main block was originally a single room on the first floor, with a centrally placed fireplace on the south wall and a narrow box winder stair in the southeast corner. The house was constructed on land owned by the New Geneva Glassworks Company, which was founded in 1797 by Albert Gallatin and German glassmakers and is credited with producing the first glass west of the Alleghenies. The house is regarded as one of four surviving houses tied to the early glass industry of southwestern Pennsylvania. Its significance rests on this industrial link and on its survival as a representative small vernacular dwelling of the early nineteenth century. Later changes include modern windows, panelling, a porch with wrought iron posts, and a rear kitchen addition.","period_of_significance":"1820-1860","architect_builder":null,"architectural_style":"Vernacular I house","criteria":["A"],"status_note":"Renovated in the twentieth century with modern windows, doors and interior panelling; a shed roof porch and a rear kitchen addition were added, and a door was cut to create a second-floor apartment in the late twentieth century.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:37.725509-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/95000121.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/95000121/6bead10924-800.webp","url_1600":"https://nationalhistoricalregister.com/media/95000121/6bead10924-1600.webp","licence":"CC BY-SA 3.0","author":"Generic1139","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Glassworks-Core_House.jpg\" rel=\"noopener\">Generic1139</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:Glassworks-Core_House.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992987","wikipedia":"https://en.wikipedia.org/wiki/Glassworks-Core_House","wikidata":"https://www.wikidata.org/wiki/Q5567194"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/greene-county/glassworks-core-house-95000121/"}