{"nrhp_refnum":"70000228","name":"Wood, John, Mansion","other_names":["Historical Society of Quincy and Adams County Building"],"category":"building","location":{"address":"425 S. 12th St.","address_restricted":false,"city":"Quincy","county":"Adams County","state":"IL","lat":39.92743455400006,"lon":-91.39601720799999,"geom_source":"nps_gis"},"listed_date":"1970-04-17","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government"],"significance_levels":["national"],"summary":{"what_it_is":"A Greek Revival frame mansion at 425 South Twelfth Street in Quincy, Adams County, Illinois, built in 1835 for John Wood and now a museum of the Historical Society of Quincy and Adams County.","why_significant":"The nomination presents it as the oldest major large residence still standing and in good condition in Quincy. It was the home of John Wood, the first permanent white settler in the Quincy area, a founder of the Republican party and Governor of Illinois in 1859. It is also noted for fine Greek Revival architectural details and for the Society's historical collections.","narrative":"Built in 1835 for John Wood, this Greek Revival frame house at 425 South Twelfth Street in Quincy, Illinois, has served as a public museum and the home of the Historical Society of Quincy and Adams County since 1907. Wood, who in 1822 became the first white man to settle permanently in the Quincy area, later served as Lieutenant Governor and became Governor of Illinois in 1859. The house was built by master mechanic John Cleaveland. Wood moved it across the street in 1864 after building a larger mansion, and it became the home of his eldest son. When the Society acquired it, part of the one-story section was raised to two stories and a Doric-style porch was added by local architect Ernest Wood. Carved woodwork and plaster ceiling medallions survive inside. It is considered the oldest major large residence still standing in good condition in Quincy, and the museum holds items tied to local, Lincoln-era and Mormon history.","period_of_significance":"19th Century (specific date 1835)","architect_builder":"John Cleaveland, master mechanic (builder); Ernest Wood, local architect (1907 porch and second-story alterations)","architectural_style":"Greek Revival","criteria":[],"status_note":"Described as structurally sound and in good condition, in use as a public museum and home of the Historical Society; exterior repair and painting were scheduled for spring 1970.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:35.277765-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/54/8916/28891654/content/electronic-records/rg-079/NPS_IL/70000228.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/70000228/7e0c3b1d4b-800.webp","url_1600":"https://nationalhistoricalregister.com/media/70000228/7e0c3b1d4b-1600.webp","licence":"Public domain","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Quincy_J_Wood_House.JPG\" rel=\"noopener\">Smallbones</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Quincy_J_Wood_House.JPG"},"district":{"nrhp_refnum":"92000484","name":"South Side German Historic District","url":"https://nationalhistoricalregister.com/districts/illinois/south-side-german-historic-district-92000484/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28891654","wikipedia":"https://en.wikipedia.org/wiki/John_Wood_Mansion","wikidata":"https://www.wikidata.org/wiki/Q6264785"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/adams-county/wood-john-mansion-70000228/"}