{"nrhp_refnum":"05000575","name":"Hercules Motors Corporation Industrial Complex","other_names":["C. Aultman &amp","Co.","White Engines Inc."],"category":"district","location":{"address":"101 11th St. SE","address_restricted":false,"city":"Canton","county":"Stark County","state":"OH","lat":40.791021325500054,"lon":-81.37624188338411,"geom_source":"nps_gis"},"listed_date":"2005-06-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Industry","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"An industrial district of 35 contributing buildings and 8 structures on a 23-acre site at 101 11th Street SE, about a mile south of downtown Canton, Stark County, Ohio, built between circa 1855 and 1964.","why_significant":"The complex began with C. Aultman & Co., maker of threshers and engines, and later housed other manufacturers before Hercules Motors Corporation built its engine plant there from 1916. It shows the evolution of industrial architecture from 19th-century balloon frame and masonry buildings to 20th-century steel and concrete construction. The criteria and exact period of significance are not legible in the provided text.","narrative":"This 23-acre industrial complex lies about a mile south of downtown Canton, Ohio, and holds 35 buildings and 8 structures built between about 1855 and 1964. The oldest buildings were put up by C. Aultman & Co., a maker of threshers and engines, and include a three-story balloon frame and masonry storage building, a carpenter shop and paint shops. Later occupants included a papier-mache figure maker and an ice machine company. Hercules Motors Corporation built Building 1, a machine shop, in 1916 as its first structure on the site, then added assembly, testing, machine shop and office buildings through the 1920s, 30s and 40s. Firestone and Motter, local architects, designed the 1940s buildings. The later buildings use reinforced concrete, brick and steel industrial windows, with flat roofs and monitors. A 148-foot brick stack once lettered HERCULES marks the boiler house. The site is recognized as a layered record of how industrial architecture changed over roughly a century.","period_of_significance":null,"architect_builder":"C. Aultman & Co. (circa 1855 buildings); Firestone and Motter, Stark County architects (1940s buildings and Building 25); Hercules Motors Corporation","architectural_style":"Late 19th and 20th Century Revivals; Late Victorian","criteria":[],"status_note":"Most recent use of the buildings was industrial storage; the boiler system was replaced by a modern electrical substation after the period of significance. Several 19th-century buildings retain a high level of integrity.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:52:07.563822-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/05000575.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71991456","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/stark-county/hercules-motors-corporation-industrial-complex-05000575/"}