found: Diamond of California Web site, May 19, 2008(1912: The California Walnut Growers Association (CWGA) is organized; 1917: California Prune and Apricot Growers is formed as a cooperative; 1956: CWGA changes its name to Diamond Walnut Growers; 1960: California Prune changes its name to Sunsweet Growers; 1974: Diamond Walnut and Sunsweet band together to form Diamond/Sunsweet; 1980: Sun-Maid Growers of California joins the company and forms Sun-Diamond Growers of California; 2000: Diamond of California begins operations independent of Sun-Maid