1966: The NHL, a six-team league since the 1942-43 season, announces that six conditional franchises have been granted for teams scheduled to begin play in 1967-68.

After listening to 13 proposals during three days in New York, the Board of Governors awards franchises to Philadelphia, Los Angeles, Pittsburgh, San Francisco, Minneapolis-St. Paul and St. Louis. The newcomers will pay a $2 million franchise fee and must have an arena that seats at least 12,500.

The "Second Six" are placed into a new West Division, with the champion earning a berth in the Stanley Cup Final against the East Division champion.

Video: Memories: The NHL doubles in size in 1966

MORE MOMENTS

1924: The NHL announces its first individual award: The Hart Trophy is to be given to the player judged the most valuable to his team during the regular season. Ottawa Senators center Frank Nighbor becomes the first winner after the 1923-24 season.

1971: Ken Hodge assists on all six Boston Bruins goals in a 6-3 win against the New York Rangers at Boston Garden. Phil Esposito scores one goal and has four assists for Boston, which extends its home undefeated streak to 21 games (20-0, one tie).

1984: Guy Lafleur passes Jean Beliveau to become the all-time leading scorer in the history of the Montreal Canadiens. Lafleur scores three goals and has an assist in Montreal's 7-6 loss to the Vancouver Canucks. His third goal of the game gives him 1,220 points, one more than Beliveau.

Video: Guy Lafleur won Cup five times in Montreal

1985: Bryan Trottier becomes the first player in NHL history to score 25 goals in each of his first 10 NHL seasons. He gets No. 24 and 25 in the New York Islanders' 4-1 win against the Pittsburgh Penguins at Nassau Coliseum.

Video: Bryan Trottier was mainstay on six Cup-winning teams

1988: Mario Lemieux sets an All-Star Game record with six points (three goals, three assists) and teammate Mats Naslund sets another mark with five assists in the Wales Conference's 6-5 overtime win against the Campbell Conference in St. Louis. Naslund sets up Lemieux for the winning goal 1:08 into overtime.

1992: Mike Gartner becomes the third player in NHL history to score at least 30 goals in 13 consecutive seasons when he gets a first-period goal for the Rangers in a 5-5 tie against the Detroit Red Wings at Madison Square Garden. He ties the record mark then shared by Esposito and Bobby Hull.

2003: Martin Brodeur becomes the first goalie in NHL history to win at least 30 games for eight consecutive seasons when the New Jersey Devils defeat the Minnesota Wild 3-2 in East Rutherford, New Jersey. Brodeur finishes 2002-03 with 41 victories; he goes on to extend his record streak to 12 consecutive seasons.

2018: The New York Islanders become the third team in NHL history to trail by at least three goals in the final 5:26 of the third period and win. They score four power-play goals during a major penalty, allow the Detroit Red Wings to tie the game in the final minute of regulation, then earn a 7-6 victory when Brock Nelson completes a hat trick by scoring 3:15 into overtime. Islanders center Mathew Barzal has five assists for his third five-point game of the season, becoming the first rookie since Joe Malone in 1917-18, the NHL's first season, to have three five-point games.

2019: Carter Hart becomes the second goalie in NHL history to have an eight-game winning streak before he turns 21 when he makes 30 saves for the Philadelphia Flyers in a 6-2 win against the Anaheim Ducks at Wells Fargo Center. He joins Jocelyn Thibault, who goes 8-0-0 with the Quebec Nordiques from March 6-26, 1995, for the longest such streak in NHL history.