{"nrhp_refnum":"02001411","name":"Dement-Zinser House","other_names":[],"category":"building","location":{"address":"105 Zinser Place","address_restricted":false,"city":"Washington","county":"Tazewell County","state":"IL","lat":40.706516803000056,"lon":-89.40731219599996,"geom_source":"nps_gis"},"listed_date":"2002-11-27","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Health/Medicine","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story Greek Revival brick house at 105 Zinser Place in Washington, Tazewell County, Illinois, built in 1858 by Richard C. Dement, with a contributing bungalow doctor's office and a noncontributing garage.","why_significant":"The nomination argues local significance under Criterion B for its association with Dr. Harley A. Zinser, a prominent Washington physician who practiced there from 1905 to 1930. It is also significant under Criterion C as an example of Greek Revival architecture, said to be the only such house in Washington and possibly its oldest.","narrative":"Built in 1858 by Richard C. Dement, a trader, riverboat owner and postmaster of nearby Spring Bay, this two-story brick house stands one block north of the town square in Washington, Illinois. Its Greek Revival character shows in the low-pitched gable roof, wide trimmed cornice with returns, six-over-six windows and a front door framed by glass panes. Later additions, including a dining room and library, kitchen, bathroom, porch and a 1920 portico, gave it an irregular plan. In 1905 Dr. Harley A. Zinser, a prominent local physician, bought the house and began practicing in the east parlor, later building a bungalow office on the grounds that still holds much of his furnishings and instruments. His practice ran until about 1930. The house is described as the only Greek Revival house in the city and possibly its oldest. The Washington Historical Society acquired it in 1994 and uses it as an office and museum.","period_of_significance":"1905-1930 (Criterion B); 1858 (Criterion C)","architect_builder":"Unknown (built by Richard C. Dement, a trader, riverboat owner and postmaster of Spring Bay)","architectural_style":"Greek Revival","criteria":["B","C"],"status_note":"Used by the Washington Historical Society as an office and small museum since its purchase in 1994; the bungalow is being prepared as museum space and the garage is used for storage.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.601555-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/0/8942/28894200/content/electronic-records/rg-079/NPS_IL/02001411.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/02001411/986acf9a54-800.webp","url_1600":"https://nationalhistoricalregister.com/media/02001411/986acf9a54-1600.webp","licence":"CC BY-SA 3.0","author":"Esvobod2","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Dement_Zinser_House.JPG\" rel=\"noopener\">Esvobod2</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:Dement_Zinser_House.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28894200","wikipedia":"https://en.wikipedia.org/wiki/Dement-Zinser_House","wikidata":"https://www.wikidata.org/wiki/Q22033944"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/tazewell-county/dement-zinser-house-02001411/"}