{"nrhp_refnum":"99001379","name":"Smith-Duncan, House and Eastman Barn","other_names":["Smith--Duncan Site","Duncan Farmstead"],"category":"building","location":{"address":"IL 100 at Pere Marquette State Park, 2000 ft. W of Deer Lick Hollow","address_restricted":false,"city":"Grafton","county":"Jersey County","state":"IL","lat":38.96940230450005,"lon":-90.51191481766196,"geom_source":"nps_gis"},"listed_date":"1999-11-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A farmstead on the east bluff base of the Illinois River, in what is now Pere Marquette State Park near Grafton, Jersey County, Illinois. It has a two-story vernacular limestone house built between 1861 and 1868 for Jacob Smith, and a stone-and-frame raised three-bay barn dated 1876.","why_significant":"The nomination argues for significance under architectural criteria. The house is a rare surviving stone farm dwelling in rural western Jersey County, with a central-hall, double-pile plan and dressed-stone detailing. The barn is a good example of a raised three-bay (bank) barn with fine stonework, built by Allen Cleason for Henry Eastman's dairy operation.","narrative":"Set at the foot of the Illinois River bluff within Pere Marquette State Park, four miles west of Grafton, this farmstead pairs a limestone house with a stone-and-frame barn. The two-story house was built between 1861 and 1868 for Jacob Smith. It has a central hall, four rooms on each floor, thick native limestone walls, dressed-stone sills and lintels, and a full-length two-story wooden porch. Terraced retaining walls and a flight of stone steps shape the yard. About 250 feet west stands the barn, a raised three-bay type built into the slope, with a carved lintel reading \"H. Eastman 1876\" and a large cupola. Allen Cleason built it when Henry Eastman expanded the farm for commercial dairy production. Stone farm buildings are uncommon in rural western Jersey County, where quarried stone was mostly shipped to cities. The pair was recognized for its architecture and for the quality of its stonework, despite some twentieth-century alterations.","period_of_significance":"c. 1861-1876","architect_builder":"House: unknown; barn: Allen Cleason, builder","architectural_style":"Central Hall, double pile (house); Other: Raised Three-Bay Barn","criteria":["C"],"status_note":"Current function is listed as vacant/not in use; the property is publicly owned (State) and has later alterations such as a modern garage, replaced windows and doors, and a partly collapsed retaining wall section.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.20002-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/47/8930/28893047/content/electronic-records/rg-079/NPS_IL/99001379.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/99001379/8e3cd198d6-800.webp","url_1600":"https://nationalhistoricalregister.com/media/99001379/8e3cd198d6-1600.webp","licence":"CC BY 3.0","author":"Kbh3rd","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Pere_Marquette,_Vadalabene-201405117-112.jpg\" rel=\"noopener\">Kbh3rd</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Pere_Marquette,_Vadalabene-201405117-112.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28893047","wikipedia":"https://en.wikipedia.org/wiki/Smith-Duncan_House_and_Eastman_Barn","wikidata":"https://www.wikidata.org/wiki/Q18158139"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/jersey-county/smith-duncan-house-and-eastman-barn-99001379/"}