{"nrhp_refnum":"96000832","name":"Spring Grove Historic District","other_names":[],"category":"district","location":{"address":"Roughly bounded by Mason, Spring Grove, Greenwood, and Conrail Tracks","address_restricted":false,"city":"Toledo","county":"Lucas County","state":"OH","lat":41.65129847150007,"lon":-83.5071468718051,"geom_source":"nps_gis"},"listed_date":"1996-08-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A small residential historic district in East Toledo, Lucas County, Ohio, roughly bounded by Mason, Spring Grove and Greenwood, with 33 buildings built between 1910 and 1917 by the Toledo contracting firm Breyman & O'Neil.","why_significant":"The district is significant under Criterion C as an example of vernacular working-class residential architecture in East Toledo. It has the heaviest concentration of cast-concrete block houses in the city, and the nomination calls them the best examples of cast concrete used as a type of masonry. All 19 dwellings were built by Breyman & O'Neil, often as speculation housing during a period of industrial growth.","narrative":"This small East Toledo neighborhood near Mason Street, Spring Grove Avenue and Greenwood Avenue contains 33 buildings: 19 single-family houses, 3 contributing outbuildings and 11 noncontributing outbuildings. All were built between 1910 and 1917 by the Toledo contracting firm Breyman & O'Neil, which specialized in railway, street and sewer work and also built homes on the East Side, often as speculative investments. Fourteen of the houses are made of cast-concrete block, including their Ionic-capped porch columns. No other part of Toledo has so many of them in one place, and the nomination calls them the best local examples of cast concrete used as masonry. The houses are one-and-a-half or two stories with full front porches and gabled or hipped roofs. The district was listed for architecture because it reflects the housing boom that followed industrial growth in East Toledo, when factories drew workers and builders put up homes for them. The four frame houses have been resided, but the block houses are largely unaltered.","period_of_significance":"1910-1917","architect_builder":"Breyman & O'Neil (local Toledo contracting firm)","architectural_style":"Late 19th and Early 20th Century American Movements; Vernacular (Residential Architecture in Ethnic and Working Class Neighborhoods)","criteria":["C"],"status_note":"Described as completely intact, with 19 single-family dwellings still in residential use; some frame houses have been resided and the concrete block houses are largely untouched.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:52:06.725832-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/96000832.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71985800","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/lucas-county/spring-grove-historic-district-96000832/"}