https://www.napawatersheds.org/managed_files/Document/4939/Napa%20Roads_Final%20Report.pdf
https://napavalleyregister.com/community/calistogan/news/growers-vintners-share-oral-histories-of-st-helena-s-spring/article_396dcc79-4242-5981-8678-b3b44d3ea9bf.html
https://www.wineinstitute.org/files/AVA/Final%20Rules/Spring%20Mountain%20Final%20Rule.pdf
https://ot-process2.sdsc.edu/potree/index.html?r=%22https://ot-process2.sdsc.edu/appEntwineEPTService1575600681638188299501/pc1575600671155%22