{"nrhp_refnum":"85000123","name":"US Post Office-Oroville Main","other_names":["Oroville Main Post Office"],"category":"building","location":{"address":"1735 Robinson St.","address_restricted":false,"city":"Oroville","county":"Butte County","state":"CA","lat":39.51384427700003,"lon":-121.55701860799996,"geom_source":"nps_gis"},"listed_date":"1985-01-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"The Oroville Main Post Office is a federal post office building at 1735 Robinson Street in Oroville, Butte County, California, built 1932-1933 and designed under the Office of the Supervising Architect.","why_significant":"The nomination argues the building has state significance as a rare example of a style transitional between the Beaux-Arts/Renaissance Revival tradition and the Starved Classical style of the 1930s. Locally, it is the only federal building in Oroville and one of the town's most monumental and prominent buildings.","narrative":"Oroville's main post office, at 1735 Robinson Street, was begun in 1932 and completed in 1933 under the Office of the Supervising Architect. It is a small, symmetrical classical building with a central arcade flanked by two slightly projecting wings, a pitched red tile roof and terracotta ornament including floral impost moldings, a frieze with medallions and dentil molding. Its style sits between the Renaissance Revival designs of the 1920s and the Starved Classicism of the 1930s, showing that the later style evolved gradually from earlier federal design practice. That transitional character is the basis for its state-level significance. Locally, it is the only federal building in Oroville and one of the most imposing buildings in town. A 1964 rear addition extended the workroom and platform, and the lobby was remodeled at that time, though the exterior ornament and original lobby lamps survive. The Postal Service still occupies the building.","period_of_significance":"1900-","architect_builder":"James A. Wetmore / Louis A. Simon, OSA","architectural_style":"Late Second Renaissance Revival or early Starved Classicism (transitional)","criteria":[],"status_note":"Occupied entirely by the Postal Service; condition marked excellent and altered, with a rear addition completed in 1964 and a remodeled lobby.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:27.800668-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/85000123.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/85000123/cb64f3ae6c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/85000123/cb64f3ae6c-1600.webp","licence":"CC0","author":"Ammodramus","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Oroville,_California_post_office_from_NW_1.JPG\" rel=\"noopener\">Ammodramus</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Oroville,_California_post_office_from_NW_1.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123857364","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q133259234"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/butte-county/us-post-office-oroville-main-85000123/"}