{"nrhp_refnum":"83000759","name":"Patton and Loomis Block","other_names":[],"category":"building","location":{"address":"1628-40 Main St.","address_restricted":false,"city":"Springfield","county":"Hampden County","state":"MA","lat":42.104090162000034,"lon":-72.59384691799994,"geom_source":"nps_gis"},"listed_date":"1983-02-24","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A commercial block at 1628-40 Main Street in downtown Springfield, Hampden County, Massachusetts, built in 1864 to designs by J.M. Currier and given a new facade in 1909.","why_significant":"The block is argued to meet Criteria A, B and C. It reflects two downtown boom periods, 1864-1880s and 1909-1920, and is tied to developers William Patton and Frank L. Dunlap. Its 1909 stucco facade illustrates the trend of updating older commercial blocks in a newer commercial style.","narrative":"Standing at 1628-40 Main Street in downtown Springfield, this brick commercial block was built in 1864 for William Patton, a notions merchant and real estate developer, and C.L. Loomis, a cigar manufacturer. J.M. Currier, a local architect, designed it. Originally it held stores at street level, Patton's offices on the second floor, a commercial college on the third, and a hall and gymnasium on the fourth. In 1909 Frank L. Dunlap, another prominent real estate developer, spent $15,000 on a new stucco facade. The four-bay front wraps the corner at Hampden Street and has paired windows between full-height pilasters, topped by classical ornament and a brick parapet. The Hampden Street side still shows the narrow windows with stone lintels and sills of 1864, so both design phases remain visible. The block represents two periods of downtown commercial growth and the practice of modernizing older buildings to suit a newer image. Its integrity remains strong despite 1950s storefront changes.","period_of_significance":"1864-1880s and 1909-1920","architect_builder":"J.M. Currier (original building)","architectural_style":"Early 20th C. Commercial","criteria":["A","B","C"],"status_note":"Minimal alteration since 1909 apart from 1950s glass and aluminum storefronts, which were slated for replacement with period-appropriate storefronts as part of a new owner's renovation plan.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:56.127606-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/7/7903/63790307/content/electronic-records/rg-079/NPS_MA/83000759.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/83000759/c5f3a5d100-800.webp","url_1600":"https://nationalhistoricalregister.com/media/83000759/c5f3a5d100-1600.webp","licence":"CC BY-SA 3.0","author":"John Phelan","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Patton_and_Loomis_Block,_Springfield_MA.jpg\" rel=\"noopener\">John Phelan</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:Patton_and_Loomis_Block,_Springfield_MA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63790307","wikipedia":"https://en.wikipedia.org/wiki/Patton_and_Loomis_Block","wikidata":"https://www.wikidata.org/wiki/Q7148653"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/hampden-county/patton-and-loomis-block-83000759/"}