{"nrhp_refnum":"07001198","name":"Eugene O'Neill National Historic Site","other_names":["Tao House"],"category":"building","location":{"address":"1.5 mi. W of Danville","address_restricted":false,"city":"Danville","county":"Contra Costa County","state":"CA","lat":37.826044557000046,"lon":-122.02715663699996,"geom_source":"nps_gis"},"listed_date":"1978-10-12","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Literature"],"significance_levels":["national"],"summary":{"what_it_is":"Eugene O'Neill National Historic Site is a park unit in Danville, Contra Costa County, California, centered on Tao House, created as a unit of the National Park Service on 12 October 1976 and covering 13.2 acres.","why_significant":"The document gives no statement of significance. It is an administrative record explaining that the park unit is undocumented and that the separate Tao House listing (1971) shares a National Historic Landmark designation with the same name.","narrative":"Eugene O'Neill National Historic Site is a park unit in Danville, Contra Costa County, California, associated with Tao House. The records available here are administrative rather than descriptive. They show that Tao House was listed in the National Register on 6 May 1971 and designated a National Historic Landmark on 17 July 1971, both covering 158.6 acres. The park unit, called Eugene O'Neill National Historic Site, became part of the National Park Service on 12 October 1976 and covers 13.2 acres. A 2012 note from the Keeper's office explains that the 1971 reference number applies to both the register listing and the landmark designation because their boundaries match. The text documentation for the register listing is missing from both the federal office and the California state office, although the landmark documentation and a map survive. The separate reference number for the park unit has no documentation. No description of the buildings or statement of significance is included.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Administrative note says the park unit was created in 1976 and is undocumented; text documentation for the earlier 1971 Tao House listing is missing.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.410229-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/07001198.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/07001198/c21e500de2-800.webp","url_1600":"https://nationalhistoricalregister.com/media/07001198/c21e500de2-1600.webp","licence":"Public domain","author":"Related names: O'Neill, Carlotta Confer, Frederick Corduroy Hills Joint Venture O'Neill, Eugene Reimers, Frederick Simpson, Lloyd C Gerdes Miller Boucher, Jack, photographer McDonald, Melissa, historian Cox, Robert M, historian McCown, Susan, historian English, Fred, photographer","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:BLEMIE%27S_GRAVE,_LOOKING_WEST._BLEMIE_WAS_THE_O%27NEILLS%27_PET_DACHSUND_-_Eugene_O%27Neill_House,_Kuss_Road,_Danville,_Contra_Costa_County,_CA_HABS_CAL,7-DAN.V,1-65.tif\" rel=\"noopener\">Related names: O'Neill, Carlotta Confer, Frederick Corduroy Hills Joint Venture O'Neill, Eugene Reimers, Frederick Simpson, Lloyd C Gerdes Miller Boucher, Jack, photographer McDonald, Melissa, historian Cox, Robert M, historian McCown, Susan, historian English, Fred, photographer</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:BLEMIE%27S_GRAVE,_LOOKING_WEST._BLEMIE_WAS_THE_O%27NEILLS%27_PET_DACHSUND_-_Eugene_O%27Neill_House,_Kuss_Road,_Danville,_Contra_Costa_County,_CA_HABS_CAL,7-DAN.V,1-65.tif"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123858522","wikipedia":"https://en.wikipedia.org/wiki/Eugene_O%27Neill_National_Historic_Site","wikidata":"https://www.wikidata.org/wiki/Q14681956"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/contra-costa-county/eugene-oneill-national-historic-site-07001198/"}