{"nrhp_refnum":"77000316","name":"Hatt Building","other_names":[],"category":"building","location":{"address":"5th and Main Sts.","address_restricted":false,"city":"Napa","county":"Napa County","state":"CA","lat":38.29613659200004,"lon":-122.28269632099995,"geom_source":"nps_gis"},"listed_date":"1977-05-02","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry"],"significance_levels":["local"],"summary":{"what_it_is":"The Hatt Building is a building in Napa, Napa County, California. A date stone or inscription reading 1884 and the name A. Hatt appears in the document, but the text does not state who built it.","why_significant":"The document does not include the nomination form, so no statement of significance is available. It contains only a USGS topographic location map and a notice that the nomination form, photographs and USGS map documentation are missing from the entry.","narrative":"The Hatt Building is a historic building in Napa, Napa County, California, listed on the National Register of Historic Places in 1977. The surviving file for this entry is limited. It consists of a USGS 7.5-minute Napa quadrangle map marking the building's location and boundary, with UTM coordinates of zone 10, 562820 east and 4238720 north, and a latitude of about 38°17'47\" north. A label on the material carries the year 1884 and the name A. Hatt, which may relate to the building's origin, though the text does not explain this. The nomination form itself is noted as missing, so there is no description of the architecture, builder, original use, current condition or the reasons the building was judged significant. Details beyond its location in downtown Napa cannot be confirmed from this material.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.763137-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/77000316.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/77000316/1019e1fbf6-800.webp","url_1600":"https://nationalhistoricalregister.com/media/77000316/1019e1fbf6-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Hatt_Building,_5th_and_Main_Sts.,_Napa,_CA_9-5-2010_3-41-37_PM.JPG\" rel=\"noopener\">Sanfranman59</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:Hatt_Building,_5th_and_Main_Sts.,_Napa,_CA_9-5-2010_3-41-37_PM.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860032","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q133308231"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/napa-county/hatt-building-77000316/"}