{"nrhp_refnum":"94001284","name":"Winslow Chemical Laboratory","other_names":["Winslow Building"],"category":"building","location":{"address":"105 Eighth St.","address_restricted":false,"city":"Troy","county":"Rensselaer County","state":"NY","lat":42.731170734000045,"lon":-73.68417786099997,"geom_source":"nps_gis"},"listed_date":"1994-11-04","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Education","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A two-story brick laboratory building at 105 Eighth Street in Troy, Rensselaer County, New York, built in 1865 for Rensselaer Polytechnic Institute and enlarged several times, most recently in 1930-31.","why_significant":"It is the earliest surviving building tied to the late nineteenth-century growth of Rensselaer Polytechnic Institute, which became one of America's leading engineering schools. It is also an intact example of mid-nineteenth century collegiate architecture in a Romanesque Revival idiom, with detailed brickwork. The 1930-31 addition closely copied the original design.","narrative":"Built in 1865 as the chemistry laboratory for Rensselaer Polytechnic Institute, this brick building in Troy, New York, is the oldest surviving structure linked to the school's growth after the 1862 fire. It was named for trustee John Winslow, who paid half of its $5,000 cost. Fires in 1884 and 1902 led to remodeling and a brick addition, and a large south wing designed by Joseph M. Lawlor was added in 1930-31, bringing it to 142 by 40 feet. The two-story walls rest on a stone foundation under a slate hipped roof and are decorated with corbels, arches, dentils and paneled pilasters. After the Walker Laboratory opened in 1907, the building served as a wood shop, foundry and pattern shop, and later held labs, offices and classrooms. It was vacant when documented and was being prepared for use by a children's museum. Its integrity is described as high, and it was listed for education and architecture.","period_of_significance":"1865-c1931","architect_builder":"Architect of original building unknown (possibly Marcus F. Cummings); 1930-31 addition by Joseph M. Lawlor","architectural_style":"Romanesque","criteria":["A","C"],"status_note":"Listed as vacant. Interior partitions were being removed to prepare for museum use, windows were boarded up, and some partitions were vandalized.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:50.202573-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/94001284.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/94001284/385f12da1f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/94001284/385f12da1f-1600.webp","licence":"Public domain","author":"Unknown authorUnknown author","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:RPI_Winslow_lab.jpg\" rel=\"noopener\">Unknown authorUnknown author</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:RPI_Winslow_lab.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75321325","wikipedia":"https://en.wikipedia.org/wiki/Winslow_Chemical_Laboratory","wikidata":"https://www.wikidata.org/wiki/Q8025945"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/rensselaer-county/winslow-chemical-laboratory-94001284/"}