In 1987, Knudsen Vineyards entered into a long-term grape supply agreement with newly established Argyle Winery.
Cal had always wanted to make an Oregon sparkling wine and realized his vision was shared by Rollin Soles, founding Argyle winemaker, and Rollin's partners in the winery. Knudsen Vineyard has remained a prime supplier of the highest quality fruit to Argyle for its production of Sparkling, Pinot Noir and Chardonnay wines. Over the years, Argyle has won more awards for its wine, both still and sparkling, than any other winery in Oregon.