Main Grapes from VineClub database:

Cabernet Sauvignon, Merlot, Chardonnay, Cabernet Franc…

January 1981 Napa became the second AVA or Approved Viticultural Area in the US. Augusta Missouri was the first six months earlier (June 1980).

History & Timeline from Napa Valley Vintners

Wappo Indians named the place, Napa is land of plenty.

Here is a very nice guide on what to do and where to go while visiting Napa Valley by  Rick Bakas Napa