Wine industry insiders say that Amazon.com, the largest global online retailer, plans to start selling U.S.-produced wine on its website within the United States by early October.

CHICAGO _ You may find yourself toasting the holiday season with a glass of Clos du Bois, entertaining ideas that your sophisticated-sounding sauvignon blanc came from a California boutique winemaker. But while labels often don't bear the stamp of a large corporation, it is big business.