The expansion era of the National Hockey League began in 1967. The Los Angeles Kings, Minnesota North Stars, Oakland Seals, Philadelphia Flyers, Pittsburgh Penguins and St. Louis Blues began play in the 1967–68 season. The NHL added another six teams by 1974 to bring the league to 18 teams. This was the highest scoring period in NHL history, led by the Edmonton Oilers and Wayne Gretzky, who scored 200 points or more four times.
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