Sonoma Valley Vintners and Growers Alliance
- Organization formed to promote local wines and grapes, support cooperation and collaboration among the region's vintners and growers and to develop community awareness of the industry. Winery listing, environmental facts, events, members, history, goals,
- http://www.sonomavalleywine.com/

Sonoma County Grape Growers Association
- News, articles, directory, calendar, and wine information.
- http://www.scgga.org/

Russian River Valley Winegrowers
- Association focused on issues of interest to growers. Membership information and listing, news, history of the area, calendar, and grapes for sale.
- http://www.rrvw.org/

Trentadue Winery
- Produces a range of red and port-style wines. Includes information about products, the family, the winemaking, and the vineyards. Locations in Geyserville and Healdsburg.
- http://www.trentadue.com/

Sonoma County Wineries Association
- History of the region, member directory, events, information for visitors.
- http://www.sonomawine.com/

Winegrowers of Dry Creek Valley
- Association provides information on history, wines and wineries of this small region that lies west of Healdsburg and Geyserville.
- http://www.wdcv.com/