{"nrhp_refnum":"01001049","name":"S.R. Crown Hall","other_names":[],"category":"building","location":{"address":"3360 S. State St.","address_restricted":false,"city":"Chicago","county":"Cook County","state":"IL","lat":41.833554691000074,"lon":-87.62673533599997,"geom_source":"nps_gis"},"listed_date":"2001-08-07","is_nhl":true,"nhl_designated_date":"2001-08-07","areas_of_significance":[],"significance_levels":[],"summary":{"what_it_is":"S.R. Crown Hall is a building in Chicago, Cook County, Illinois, listed on the National Register of Historic Places in 2001. The supplied document does not give its construction date or designer.","why_significant":"The supplied text is only a locator card marking the nomination folder as missing. It contains no Section 7 or Section 8 content, so the reasons for its significance are not stated.","narrative":"S.R. Crown Hall is a building in Chicago, Cook County, Illinois, with the National Register reference number 01001049. It was listed on 7 August 2001. The only document available for this summary is a National Park Service locator card dated March 2015. The card marks the property's nomination file as missing, covering the entire folder, and lists no map, photograph, microfiche or optical disk copy as available. Because the card holds no description or statement of significance, it gives no details about the building's age, design, builder, use or condition. It also does not explain the grounds on which the property was recognised. A fuller account of the property would need the original nomination text, which this record does not provide.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"The locator card marks the nomination file as missing (entire folder). This describes the record, not the building's condition.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:35.800766-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/75/8926/28892675/content/electronic-records/rg-079/NPS_IL/01001049.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/01001049/d4e4caccf8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/01001049/d4e4caccf8-1600.webp","licence":"Public domain","author":"Joe Ravi","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Crown_Hall_2.jpg\" rel=\"noopener\">Joe Ravi</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Crown_Hall_2.jpg"},"district":{"nrhp_refnum":"12000040","name":"Chicago Park Boulevard System Historic District","url":"https://nationalhistoricalregister.com/districts/illinois/chicago-park-boulevard-system-historic-district-12000040/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28892675","wikipedia":"https://en.wikipedia.org/wiki/S._R._Crown_Hall","wikidata":"https://www.wikidata.org/wiki/Q753180"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/cook-county/s-r-crown-hall-01001049/"}