{"nrhp_refnum":"86001342","name":"US Post Office-Lynn Main","other_names":["Lynn Main Post Office"],"category":"building","location":{"address":"51 Willow St.","address_restricted":false,"city":"Lynn","county":"Essex County","state":"MA","lat":42.46502030500005,"lon":-70.94614006099994,"geom_source":"nps_gis"},"listed_date":"1986-06-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Art","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"The Lynn Main Post Office and federal building at 51 Willow Street in downtown Lynn, Massachusetts, a two-story granite and steel building built in 1933 and designed by Edward H. Hoyt & Associates with Ripley & LeBoutillier.","why_significant":"The nomination argues it is the most architecturally distinguished building in a downtown dominated by commercial and factory buildings. It is a later example of a Type A building in the 1915 Public Buildings Classification System and an austere interpretation of Classical Revival style. It also contains 1936 lobby murals by William Riseman depicting Lynn's industrial and cultural heritage.","narrative":"Downtown Lynn, Massachusetts, is home to the Lynn Main Post Office at 51 Willow Street, a two-story building of saw-finished Chesterfield granite over structural steel that serves as both post office and federal building. Built between April and December 1933 on a lot once occupied by shoe factories, it replaced an older post office that had become inadequate after the growth of parcel post. Architects Edward H. Hoyt & Associates and Ripley & LeBoutillier gave it an austere Classical Revival design, with rusticated pilasters, Greek-inspired carving and a bronze-and-marble interior. It is a later example of a Type A building in the Treasury's 1915 classification system. The public lobby holds two oil murals by William Riseman, installed in 1936, showing Lynn's industries and civic culture. Construction also brought jobs to the city during the Depression. The building remains in use and is in excellent condition.","period_of_significance":null,"architect_builder":"Edward H. Hoyt & Assoc. & Ripley & LeBoutillier, Assoc. Architects; W.E.O'Neil Construction Company","architectural_style":"Classical Revival (austere interpretation)","criteria":[],"status_note":"Exterior, public spaces and grounds are in very good condition; the building is occupied and in government use, with alterations in 1975 and 1978.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:13:02.288857-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/92/7946/63794692/content/electronic-records/rg-079/NPS_MA/86001342.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/86001342/265e463d69-800.webp","url_1600":"https://nationalhistoricalregister.com/media/86001342/265e463d69-1600.webp","licence":"Public domain","author":"Marcbela (Marc N. Belanger)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Lynn_Post_Office.jpg\" rel=\"noopener\">Marcbela (Marc N. Belanger)</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Lynn_Post_Office.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63794692","wikipedia":"https://en.wikipedia.org/wiki/Thomas_P._Costin_Jr._Post_Office_Building","wikidata":"https://www.wikidata.org/wiki/Q7891156"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/essex-county/us-post-office-lynn-main-86001342/"}