Interestingly enough, Bill began his career at Block Advertising. After a few years, he left to become an award-winning art director at various New York agencies. He opened his own agency, DeCorso & Partners, where he successfully launched projects such as Bertolli olive oil and Barilla pasta. When he re-joined Block, he brought with him his expertise in packaged goods. Under Bill's leadership, the agency soon attracted many consumer packaged goods accounts, especially in the food and beverage industry.