{"nrhp_refnum":"93000706","name":"Ryan, William J., Estate","other_names":["Nissequogue Golf Club"],"category":"district","location":{"address":"Moriches Rd.","address_restricted":false,"city":"Nissequogue","county":"Suffolk County","state":"NY","lat":40.90371957600004,"lon":-73.1868114443916,"geom_source":"nps_gis"},"listed_date":"1993-08-09","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Entertainment/Recreation","Architecture","Social History"],"significance_levels":["local"],"summary":{"what_it_is":"A 126.6-acre former country estate on the west side of Stony Brook Harbor in Nissequogue, Suffolk County, New York, centered on a brick Georgian Revival house designed in 1930 by architect Bradley Delehanty for William J. Ryan. The grounds are now the Nissequogue Golf Club.","why_significant":"The estate is argued to be a distinctive example of the Stony Brook Harbor estate type and the last of the large country houses built on the harbor, closing an estate-building era that began in 1878. It is also significant as work of Long Island estate architect Bradley Delehanty, and for its recreation and social history associations. The golf course preserves much of the original naturalistic landscape.","narrative":"Overlooking Stony Brook Harbor in Nissequogue, this 126.6-acre property began as the country estate of William J. Ryan, publisher of the Literary Digest and a polo enthusiast. Architect Bradley Delehanty designed the two-story brick house in 1930, with a five-bay center block, hipped slate roof, and symmetrical hyphens leading to gabled end pavilions. The brick is painted white, and classical touches include Palladian windows and a marble doorway with Ionic columns. Inside, a marble-floored stairhall and Georgian-style paneling survive. Ryan lived here until his death in 1966, after which most of the land was acquired by a golf club that still uses the house as its clubhouse. The estate is notable as the last large country house built on the harbor, ending an era of waterfront estates that began in 1878. The golf course keeps much of the open, naturalistic landscape laid out around 1930, although tennis courts, a garage and maintenance buildings are modern additions.","period_of_significance":"1930","architect_builder":"Bradley Delehanty","architectural_style":"Georgian Revival","criteria":["A","C"],"status_note":"The principal house now serves as the clubhouse of the Nissequogue Golf Club; the house is described as retaining a high degree of integrity.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:51.356196-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/93000706.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75314981","wikipedia":"https://en.wikipedia.org/wiki/William_J._Ryan_Estate","wikidata":"https://www.wikidata.org/wiki/Q8013328"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/ryan-william-j-estate-93000706/"}