{"nrhp_refnum":"83000817","name":"Mason, W. A., House","other_names":[],"category":"building","location":{"address":"87 Raymond St.","address_restricted":false,"city":"Cambridge","county":"Middlesex County","state":"MA","lat":42.38563063200007,"lon":-71.12632260999999,"geom_source":"nps_gis"},"listed_date":"1983-06-30","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Science"],"significance_levels":["local"],"summary":{"what_it_is":"A small T-shaped wooden residence at 87 Raymond Street in Cambridge, Massachusetts, built in 1846-47 for surveyor W. A. Mason and enlarged in 1867.","why_significant":"The house is associated with W. A. Mason, the Cambridge surveyor who platted and surveyed nearly every developing area of the city in the nineteenth century. It is also an example of the transition between Greek Revival and Italianate styles. The nomination cites criterion B for the Mason association and criterion C for style and type.","narrative":"This modest, T-shaped wooden house at 87 Raymond Street in Cambridge was built in 1846-47 for W. A. Mason and combines Greek Revival and Italianate features, with pilasters showing the earlier style's influence. The rear ell is the original section, and the front part was added in 1867. Recent changes are limited to a stock replacement entrance surround and an enclosed porch with jalousie windows, which the nomination says do not detract from its integrity. Mason lived here from 1851 until his death in 1880, and his son Charles continued the family firm of W. A. Mason & Son. Mason was the surveyor who platted and surveyed almost every developing area in Cambridge in the nineteenth century, shaping street and lot patterns still in use in the city and nearby towns. The house was listed for this association and as an example of its style and type. The architect is unknown.","period_of_significance":null,"architect_builder":null,"architectural_style":"Greek Revival/Italianate","criteria":["B","C"],"status_note":"Residential use; the form notes only minor recent alterations, a replaced entrance surround and an enclosed porch with jalousie windows.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:56.351229-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/46/7905/63790546/content/electronic-records/rg-079/NPS_MA/83000817.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/83000817/720d8828bf-800.webp","url_1600":"https://nationalhistoricalregister.com/media/83000817/720d8828bf-1600.webp","licence":"CC BY-SA 3.0","author":"Tim Pierce","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:W.A._Mason_House.jpg\" rel=\"noopener\">Tim Pierce</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:W.A._Mason_House.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63790546","wikipedia":"https://en.wikipedia.org/wiki/W._A._Mason_House","wikidata":"https://www.wikidata.org/wiki/Q7945295"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/middlesex-county/mason-w-a-house-83000817/"}