|League||National Hockey League|
|Replaced by||Campbell Conference|
|Most titles||Chicago Black Hawks (3)|
In 1967 the NHL doubled in size, going from six teams to twelve. The Original Six, as the pre-1967 teams became retroactively known, were grouped into the East Division, while the expansion teams were placed into the West Division. This was done in order to keep teams of similar competitive strength in the same division, regardless of geographic distance, and to ensure playoff revenue for the new franchises.
When the NHL expanded again in 1970, the two new teams, the Vancouver Canucks and Buffalo Sabres, were placed into the stronger East Division. In an effort to create more balanced competition, the Chicago Black Hawks were transferred into the West Division. When the NHL expanded again in 1972, each division was given one of the expansion clubs, with the New York Islanders joining the East Division and the Atlanta Flames joining the West Division.
By 1974, another two teams (the Washington Capitals and Kansas City Scouts) entered the league, and the league underwent a major overhaul. The East and West Divisions were renamed the Prince of Wales and Clarence Campbell Conferences, respectively, composed of nine teams each. The conferences were further divided into two divisions: the Norris and Adams Divisions for the Wales Conference; the Patrick and Smythe Divisions for the Campbell Conference. Because the Conferences were not composed based on geography, the league opted to name the conferences and divisions after notable persons associated with the NHL.
The league was reformatted into two conferences with two divisions each. The California Golden Seals moved to the Adams Division. The Los Angeles Kings and Pittsburgh Penguins moved to the Norris Division. The Atlanta Flames and Philadelphia Flyers moved to the Patrick Division, while the Chicago Black Hawks, Minnesota North Stars, and St. Louis Blues moved to the Smythe Division.
|1967-68||Philadelphia (73)||Los Angeles (72)||St. Louis (70)||Minnesota (69)||Pittsburgh (67)||Oakland (47)|
|1968-69||St. Louis (88)||Oakland (69)||Philadelphia (61)||Los Angeles (58)||Pittsburgh (51)||Minnesota (51)|
|1969-70||St. Louis (86)||Pittsburgh (64)||Minnesota (60)||Oakland (58)||Philadelphia (58)||Los Angeles (38)|
|1970-71||Chicago (107)||St. Louis (87)||Philadelphia (73)||Minnesota (72)||Los Angeles (63)||Pittsburgh (62)||California (45)|
|1971-72||Chicago (107)||Minnesota (86)||St. Louis (67)||Pittsburgh (66)||Philadelphia (66)||California (60)||Los Angeles (49)|
|1972-73||Chicago (93)||Philadelphia (85)||Minnesota (85)||St. Louis (76)||Pittsburgh (73)||Los Angeles (73)||Atlanta (65)||California (48)|
|1973-74||Philadelphia (112)||Chicago (105)||Los Angeles (78)||Atlanta (74)||Pittsburgh (65)||St. Louis (64)||Minnesota (63)||California (36)|