Two years ago, Don Galleano combed the fields in Rancho Cucamonga and selected 400 grapevine cuttings, some of them nearly 100 years old, from the De Ambrogio Ranch vineyard just before it was razed for development. These prize-winning Zinfandels were then potted in Cal Poly Pomona's nursery with the hope of maintaining a small piece of the Cucamonga Valley's rich wine-producing history.