The Original Six era of the National Hockey League (NHL) began in 1942 with the demise of the Brooklyn Americans, reducing the NHL to six teams. The NHL, comprising the Boston Bruins, Chicago Black Hawks, Detroit Red Wings, Montreal Canadiens, New York Rangers and Toronto Maple Leafs, remained stable for a quarter century. These teams are collectively known today as the "Original Six". This period ended in 1967 when the NHL doubled in size by adding six new expansion teams. Maurice Richard became the first player to score 50 goals in a season in 1944 45. In 1955, Richard was suspended for assaulting a linesman, leading to the Richard Riot. Gordie Howe made his debut in 1946. He retired 35 seasons later as the NHL's all-time leader in goals and points. Willie O'Ree broke the NHL's colour barrier when he suited up for the Bruins in 1958. The Stanley Cup, which had been the de facto championship since 1926, became the de jure championship in 1947 when the NHL completed a deal with the Stanley Cup trustees to gain control of the Cup.