{"nrhp_refnum":"72000855","name":"Daisy Flour Mill, Inc.","other_names":["Dugway Mills","Sperry Mills"],"category":"building","location":{"address":"1880 Blossom Rd.","address_restricted":false,"city":"Rochester","county":"Monroe County","state":"NY","lat":43.146269790000076,"lon":-77.51205197599995,"geom_source":"nps_gis"},"listed_date":"1972-06-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A six-acre flour mill complex at 1880 Blossom Road, Rochester (Town of Penfield), Monroe County, New York. It has a mill built in 1848 and three mill workers' houses dating from the 1840s, about 1870 and the 1890s, beside Irondequoit Creek.","why_significant":"The mill has operated continuously since 1848 and is described as the only mill with a Rochester address still grinding flour, in a city that led the nation in flour milling between the Erie Canal and the Civil War. Its equipment dates from the 1890s. The workers' houses, mill race and creek together form a milling environment of educational, engineering and historical value.","narrative":"Six acres along Irondequoit Creek on Blossom Road hold a working flour mill and three mill workers' houses. The mill was built in 1848 as a rectangular, gable-roofed building, two and a half stories above a basement. Much of its hewn and sawn timber framing survives, though the board-and-batten siding dates from 1966, a square addition was made in 1912 and a silo and loading dock were added on the east side. The houses date from the 1840s, about 1870 and the 1890s, showing a progression of styles. Rochester was the nation's leading flour-milling center in the decades after the Erie Canal opened, before Buffalo and later Minneapolis overtook it. A century on, this mill was the only one with a Rochester address still grinding flour. It ran on water power until a freeze and thaw destroyed the dam in 1934, then switched to diesel and later electricity, using equipment dating from the 1890s.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Occupied and in operation as a flour mill; condition rated fair, with alterations noted. Preservation work is marked as in progress.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.26527-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/72000855.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/72000855/40342570ac-800.webp","url_1600":"https://nationalhistoricalregister.com/media/72000855/40342570ac-1600.webp","licence":"CC BY-SA 3.0","author":"Matthew D. Wilson (LtPowers)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Penfield_-_Daisy_Flour_Mill.jpg\" rel=\"noopener\">Matthew D. Wilson (LtPowers)</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Penfield_-_Daisy_Flour_Mill.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75318790","wikipedia":"https://en.wikipedia.org/wiki/Daisy_Flour_Mill","wikidata":"https://www.wikidata.org/wiki/Q5209712"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/monroe-county/daisy-flour-mill-inc-72000855/"}