{"nrhp_refnum":"79000360","name":"Damon Mill","other_names":["The Cold Storage","state survey no.:128"],"category":"building","location":{"address":"9 Pond Lane","address_restricted":false,"city":"Concord","county":"Middlesex County","state":"MA","lat":42.453332912000064,"lon":-71.40915721199997,"geom_source":"nps_gis"},"listed_date":"1979-05-25","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A complex of brick textile mill buildings at 9 Pond Lane, Concord, Massachusetts, beside the Assabet River. Its main block was designed after an 1862 fire, with later additions, and a separate three-story building stands east of Pond Lane.","why_significant":"The mill stands on a site tied to Concord's industry since the seventeenth century. It was owned by Edward Damon, a prominent civic figure, and was designed by Worcester architect Elbridge Boyden in the Italianate style. The site is also linked to the production of domet flannel, a cloth said to have been invented there by Calvin Damon.","narrative":"Damon Mill is a brick textile mill complex on the Assabet River in Concord, Massachusetts. The main group has eight attached sections, from one to six stories, with granite foundations and timber interiors. After an earlier wooden mill burned in 1862, owner Edward Damon hired Worcester architect Elbridge Boyden to design a new Italianate building with quoined corners, stilted segmental arched windows and bracketed rooflines. The site had hosted an iron works around 1660, then grist, saw and fulling mills, and a cotton mill from 1808. Calvin Damon, who bought the mill in 1834, is credited by several sources with inventing domet cloth, a cotton and wool flannel that became an American staple. Later additions included a wool warehouse, an office wing and a rear boiler section. The mill closed in 1898, was reopened as a worsted mill from 1906 to 1922, and served as an apple cold storage plant from 1930 to 1973. It was then vacant until its 1977 purchase for rehabilitation.","period_of_significance":"1800-1899","architect_builder":"Elbridge Boyden","architectural_style":"Italianate","criteria":[],"status_note":"Used as an apple cold storage plant from 1930 to 1973, then vacant until purchased in 1977 for rehabilitation into commercial, office and light industrial use. The form describes the windows as severely deteriorated.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:53.55336-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/18/7957/63795718/content/electronic-records/rg-079/NPS_MA/79000360.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79000360/0ba6cd8fdc-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79000360/0ba6cd8fdc-1600.webp","licence":"Public domain","author":"Esc861","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Damon_Mill.JPG\" rel=\"noopener\">Esc861</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Damon_Mill.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63795718","wikipedia":"https://en.wikipedia.org/wiki/Damon_Mill","wikidata":"https://www.wikidata.org/wiki/Q5212860"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/middlesex-county/damon-mill-79000360/"}