Napa Valley is widely considered one of the top American Viticultural Areas in California, and all of the United States, with a history dating back to the early nineteenth century. By the end of the nineteenth century, there were more than 140 wineries in the area. Several still exist in the valley including Charles Krug Winery, Schramsberg, Chateau Montelena, Nichelini and Beringer. Viticulture in Napa suffered a setback when prohibition was enacted in 1920. Furthering the damage was an infestation of the phylloxera root louse which killed many of the vines through the valley. These two events caused many wineries to shut down and stalled the growth of the wine industry in Napa County for years. But for many Italian and Swiss families as farm labor in the vineyards, Prohibition offered the unique opportunity for the growing and shipping of grapes to immigrant homewinemakers across the country. Charles Forni, who received a gold coin as his first U.S. dollar upon arriving, rose to be a large shipper. The Mondavi family came West from the Minnesota ore-country to Lodi to ship grapes to the "Italian Club" miners. When Prohibition stopped in 1933, the price of grapes crashed to below $24 per ton. Then A.P. Giannini, founder of Bank of America at San Francisco, started to promote to rebuild the commerce of wine and viticulture. Following the Second World War, the wine industry in Napa again began to grow. But cattle and prunes were king.