Napa Valley Grape Growers Association
- Association responsible for promoting equitable grape prices, publishing and circulating accurate market and grape production information, and lobbying for laws to protect the environment and other special qualities of the area. Board and member listing,
- http://www.napagrowers.org/

Pope Valley Winery
- Small producer of small lots of estate-grown reds and whites. Includes product descriptions, history, and news. Main winery is in Pope Valley, with a tasting room in Calistoga.
- http://www.popevalleywinery.com/