{"nrhp_refnum":"74001472","name":"Mad River Block","other_names":[],"category":"building","location":{"address":"1002-1018 W. Adams St.","address_restricted":false,"city":"Sandusky","county":"Erie County","state":"OH","lat":41.45053953100006,"lon":-82.71832699199996,"geom_source":"nps_gis"},"listed_date":"1974-10-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Social History"],"significance_levels":["local"],"summary":{"what_it_is":"A row of nine attached two-story brick houses at 1002-1018 West Adams in Sandusky, Erie County, Ohio, built around 1849 to house railroad employees.","why_significant":"The nomination argues the block has both architectural and social significance. It is an unusual example of attached Greek Revival row houses in northern Ohio and an unusually early example of company housing in the region. It was built for employees of the Mad River & Lake Erie Railroad.","narrative":"Nine attached two-story brick houses stand at 1002-1018 West Adams in Sandusky, forming a row built on cut stone foundations in a vernacular Greek Revival manner. Entrances are paired, with each pair sharing a two-step stone stoop, and openings have simple horizontal stone lintels. The end walls have parapet gables, and the interiors were finished simply, in keeping with the economical purpose of the row. Rear additions have added modern kitchens and porches, though the north facade retains its original look. The block was built, most likely in 1849, to house employees of the Mad River & Lake Erie Railroad, the first railroad chartered in Ohio. Shared party walls cut the number of exterior walls and the cost. The row is considered notable both as an uncommon northern Ohio example of Greek Revival attached housing and as an early example of company housing in the region.","period_of_significance":"19th Century (specific date 1849)","architect_builder":null,"architectural_style":"Vernacular Greek Revival","criteria":[],"status_note":"Condition listed as good and altered; rear additions for kitchens and porches were made, but the north facade is unaltered. Marked as occupied and used as private residences.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:09.236441-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/74001472.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/74001472/b2978d11a4-800.webp","url_1600":"https://nationalhistoricalregister.com/media/74001472/b2978d11a4-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Mad_River_Block.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Mad_River_Block.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71988152","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q137770936"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/erie-county/mad-river-block-74001472/"}