http://digitalassets.lib.berkeley.edu/roho/ucb/text/wright_john__w.pdf
https://westernciv.com/wp-content/uploads/2018/07/ISWC-Hist.-Wine-California-2.pdf
http://data.nbmg.unr.edu/public/Geothermal/GreyLiterature/Crook_MineralWtrTherapeuticUses_1899.pdf
http://www.ceqanet.ca.gov/NOEdescription.asp?DocPK=724090
https://www.countyofnapa.org/DocumentCenter/View/2617/Draft-Limited-Winery-Ordinance-PDF
https://library.municode.com/ca/napa_county/codes/code_of_ordinances?nodeId=TIT18ZO
https://ngmdb.usgs.gov/img4/ht_icons/Browse/CA/CA_Kenwood_291819_1954_24000.jpg