{"nrhp_refnum":"88000971","name":"Merrimack-Middle Streets Historic District (Boundary Increase)","other_names":["See Also:Merrimack--Middle Streets Historic District"],"category":"district","location":{"address":"Merrimack, Middle, Prescott, Central and Market Sts.","address_restricted":false,"city":"Lowell","county":"Middlesex County","state":"MA","lat":42.64486421000004,"lon":-71.30922604124754,"geom_source":"nps_gis"},"listed_date":"1988-07-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Community Planning and Development"],"significance_levels":["local"],"summary":{"what_it_is":"A boundary increase to the Merrimack-Middle Streets Historic District in downtown Lowell, Massachusetts, adding thirteen commercial buildings on Market and Central Streets, built between about 1836 and the 20th century.","why_significant":"The extension is argued to be a group of 19th- and early-20th-century commercial buildings showing varied styles that link to Lowell's growth as an industrial city and its commercial center. It is considered locally significant under Criteria A and C.","narrative":"This addition to Lowell's central business district covers thirteen buildings on Market and Central Streets, eleven of them contributing and two not. They date from about 1836 into the early 20th century and show a range of styles: Federal and Greek Revival, Italianate, Colonial Revival, and Art Moderne. Early survivors include the 1837 Old Market House, a Greek Revival brick building financed jointly by Middlesex County and the city, which held market stalls below and courts and police space above, and the Mansur Building of about 1836. Later four-story brick blocks such as the Tyler and Coburn buildings reflect the commercial growth that followed Lowell's rise as a textile city. The extension was listed for its local significance in commerce and architecture. The nomination points to the substantial integrity of the buildings and the few intrusions, though it counts the nine-story Com Fed Building and the altered C.G. Coburn Building as noncontributing.","period_of_significance":"ca. 1836-1910","architect_builder":null,"architectural_style":"Federal, Greek Revival, Italianate, Colonial Revival, Commercial Style, Moderne","criteria":["A","C"],"status_note":"The form notes the Moller's Store on Middle Street in the original district as vacant, but gives no overall status for the extension.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:13:02.346433-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/94/7956/63795694/content/electronic-records/rg-079/NPS_MA/88000971.pdf"},"photo":null,"district":{"nrhp_refnum":"13000404","name":"Merrimack-Middle Streets Historic District","url":"https://nationalhistoricalregister.com/districts/massachusetts/merrimack-middle-streets-historic-district-13000404/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63795694","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/middlesex-county/merrimack-middle-streets-historic-district-boundary-increase-88000971/"}