 Expansion had been a major topic of discussion among NHL owners since 1963 , when William M. Jennings of the New York Rangers proposed adding two new teams on the West Coast to counter fears that the Western Hockey League intended to compete as a major league . After several years of discussion , the NHL announced in February 1966 that it would expand by six teams , doubling the league 's size . The Los Angeles Kings , Minnesota North Stars , California Seals , Philadelphia Flyers , Pittsburgh Penguins and St. Louis Blues began play in the 1967 – 68 season . They formed the newly created West Division , and the existing teams were grouped into the East Division . The playoff format was constructed so that an established team would face an expansion team in the Stanley Cup Finals . The Clarence S. Campbell Bowl was created in honour of league president Clarence Campbell , and was awarded to the West Division champion . 
