{"nrhp_refnum":"99000976","name":"Pike-Sheldon House","other_names":[],"category":"building","location":{"address":"406 S. Third St.","address_restricted":false,"city":"Monmouth","county":"Warren County","state":"IL","lat":40.90800855200007,"lon":-90.64487085699994,"geom_source":"nps_gis"},"listed_date":"1999-08-12","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-part wood-frame house at 406 South Third Street in Monmouth, Warren County, Illinois, with a two-story section built about 1841 for Samuel Pike and a one-story south wing built by 1868 for Wilson Sheldon.","why_significant":"The nomination argues the house is significant under Criterion C for architecture. It is one of the earliest surviving Monmouth homes and shows a shift from an I-house to an Upright and Wing form. It has Greek Revival elements, early balloon frame construction, and Italianate-influenced woodwork in the wing.","narrative":"This wood-frame house at 406 South Third Street in Monmouth, Illinois, was built about 1841 for Samuel Pike as a two-story, four-room I-house. By 1868 a one-story south wing had been added for Wilson Sheldon, and the building was turned to face the street, creating an Upright and Wing form. The older section is an early example of balloon frame construction, with a limestone foundation, clapboard siding, cornice returns suggesting a temple pediment, and Greek Revival paneled doors and window trim. The wing carries Italianate-influenced woodwork. Original pine plank floors, early hardware and square nails survive. The house was restored in 1995, with later siding removed to reveal the original clapboards. Today the 1841 section serves as a historic house museum, and the wing is rented as an apartment. The house was listed for its architecture, as a good example of early Greek Revival construction of the 1840s in the Midwest.","period_of_significance":"c. 1841-c. 1868","architect_builder":null,"architectural_style":"Mid-19th Century; Other: Upright and wing (Greek Revival elements)","criteria":["C"],"status_note":"Restored in 1995 and in good condition. The 1841 section is a nonprofit historic house museum and the 1868 wing is a rental apartment.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.41869-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/43/8942/28894243/content/electronic-records/rg-079/NPS_IL/99000976.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/99000976/9c967da322-800.webp","url_1600":"https://nationalhistoricalregister.com/media/99000976/9c967da322-1600.webp","licence":"CC BY-SA 3.0","author":"JERRYE &amp; ROY KLOTZ MD","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:PIKE-SHELDON_HOUSE.jpg\" rel=\"noopener\">JERRYE &amp;amp; ROY KLOTZ MD</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:PIKE-SHELDON_HOUSE.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28894243","wikipedia":"https://en.wikipedia.org/wiki/Pike-Sheldon_House","wikidata":"https://www.wikidata.org/wiki/Q15266296"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/warren-county/pike-sheldon-house-99000976/"}