Taken from prestonvineyards.com:
Preston of Dry Creek is an organic farm and winery located in Dry Creek Valley near the historic farm town of Healdsburg, California. Founded in the 1970s by the eponymous Preston family, the nature of the business has changed over time from a conventional estate winery to a diversified farm, counting wine as one of many home-grown and hand-made food products. The Prestons include in their repertoire of concerns and commitments food, environmentalism, and community activism. Traditional in values, postmodern in practice, the Preston family, staff, farm and winery offer a timeless experience for the visitor and customer.