SID KESSLER, one of North America's top advertising executives, is a mentor and investor in new companies. He was the principal of the major advertising companies Kessler Productio...lihat lebih banyakSID KESSLER, one of North America's top advertising executives, is a mentor and investor in new companies. He was the principal of the major advertising companies Kessler Productions, Kessler Music Inc., The Air Company, and Supercorp (with John Labatt Ltd.).lihat lebih sedikit