{"nrhp_refnum":"80001423","name":"Herrick Cobblestone","other_names":[],"category":"building","location":{"address":"2127 Broadway","address_restricted":false,"city":"Rockford","county":"Winnebago County","state":"IL","lat":42.24660739300003,"lon":-89.06225834499998,"geom_source":"nps_gis"},"listed_date":"1980-05-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Art","Exploration/Settlement","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A Greek Revival cobblestone house at 2127 Broadway in Rockford, Winnebago County, Illinois, built in 1847 by Elijah L. Herrick, with walls of glacial cobbles over a Galena dolomite foundation.","why_significant":"The house is one of only two surveyed cobblestone buildings in Illinois and is among the oldest buildings in Rockford. It is a well-preserved example of cobblestone masonry, an American folk art that flourished for about thirty years. Its careful selection of stones by size and color and its embellished joints give it architectural value.","narrative":"Built in 1847 at 2127 Broadway in Rockford, this Greek Revival house is a rare surviving example of cobblestone construction in Illinois. Its walls, about 15 inches thick, are faced with glacial cobbles, including granite, limestone, basalt and diabase. Smaller, darker stones were chosen for the front, and the mortar joints were given a raised V profile. Corners are marked by limestone quoins on a Galena dolomite foundation. The house measures roughly 36 by 26 feet, with a gabled roof, two chimneys and thirteen six-over-six windows. Local tradition holds that Elijah L. Herrick and his sons built it, though the stones were probably gathered mostly on site. The northern Illinois and southern Wisconsin border once held more cobblestone buildings than anywhere outside New York, but few remain, and this is one of only two surveyed in Illinois. The house is valued as a well-preserved example of a folk art technique that spread west from New York after about 1825.","period_of_significance":"1800-1899","architect_builder":"Elijah L. Herrick","architectural_style":"Greek Revival","criteria":[],"status_note":"Exterior in good condition; some joint erosion at the southwest corner, weathered window frames and cornice damage. Used as a private residence, with a later Victorian porch added.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:34.501743-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/1/8944/28894401/content/electronic-records/rg-079/NPS_IL/80001423.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80001423/6859e88640-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80001423/6859e88640-1600.webp","licence":"CC BY 2.5","author":"IvoShandor","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Rockford_Il_Herrick_Cobblestone1.jpg\" rel=\"noopener\">IvoShandor</a>, <a href=\"https://creativecommons.org/licenses/by/2.5\" rel=\"license noopener\">CC BY 2.5</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Rockford_Il_Herrick_Cobblestone1.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28894401","wikipedia":"https://en.wikipedia.org/wiki/Herrick_Cobblestone","wikidata":"https://www.wikidata.org/wiki/Q1614207"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/winnebago-county/herrick-cobblestone-80001423/"}