{"nrhp_refnum":"98000064","name":"Proctor Building","other_names":["New Castle Hotel","Proctor Block"],"category":"building","location":{"address":"520-30 N. Milwaukee Ave.","address_restricted":false,"city":"Libertyville","county":"Lake County","state":"IL","lat":42.287391152000055,"lon":-87.95426803399994,"geom_source":"nps_gis"},"listed_date":"1998-02-05","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story brick hotel and commercial building at 520-30 N. Milwaukee Avenue in downtown Libertyville, Lake County, Illinois, built in 1903 as the New Castle Hotel (Proctor Block), designed by architect William G. Krieg.","why_significant":"The nomination presents the building as Libertyville's first metropolitan building, completed as rail connections fueled the town's growth and rebuilding after the 1895 downtown fire. It was built by the Proctor family, prominent local investors. The hotel entrance, vestibule, stairway and second-floor hallways remain largely intact despite later storefront changes and additions.","narrative":"Located on the east side of Milwaukee Avenue in downtown Libertyville, Illinois, this two-story brick building opened in 1903 as the New Castle Hotel, also called the Proctor Block. Architect William G. Krieg designed it for the Proctor brothers and a cousin, local investors involved in land development. It originally held 26 hotel apartments upstairs and five commercial spaces below. A local newspaper called it Libertyville's first metropolitan building. It rose as railroad and electric rail links brought rapid growth and as the town rebuilt after an 1895 downtown fire. Additions in 1932 and the 1940s extended the rear, and the ground-floor fronts were altered over time by tenants including a Woolworth store. Even so, the limestone-trimmed hotel entrance, vestibule, original stairway, skylit second-floor hallways, and oriel bays with metal cornice survive. Restoration work was returning several storefronts and reopening the south alley to their early appearance. The building was listed for its architectural and local historical importance.","period_of_significance":null,"architect_builder":"William G. Krieg (architect); built for Robert J., Elisha W., Charles W., and Richard E. Proctor","architectural_style":"Late 19th and 20th Century Revivals","criteria":[],"status_note":"In use with ground-floor shops and offices and second-floor sleeping rooms and apartments; the storefronts were being renovated at the time of the nomination.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.023401-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/70/8933/28893370/content/electronic-records/rg-079/NPS_IL/98000064.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/98000064/dfafc79d3d-800.webp","url_1600":"https://nationalhistoricalregister.com/media/98000064/dfafc79d3d-1600.webp","licence":"CC BY-SA 3.0","author":"McGhiever","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Proctor_Building.jpg\" rel=\"noopener\">McGhiever</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:Proctor_Building.jpg"},"district":{"nrhp_refnum":"100011737","name":"Libertyville Downtown Historic District","url":"https://nationalhistoricalregister.com/districts/illinois/libertyville-downtown-historic-district-100011737/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28893370","wikipedia":"https://en.wikipedia.org/wiki/Proctor_Building_(Libertyville,_Illinois)","wikidata":"https://www.wikidata.org/wiki/Q86752785"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/lake-county/proctor-building-98000064/"}