1925-26 - Teams to dress a maximum of 12 players for each game from a roster of no more than 14 players.
1928-29 - Exclusive of goaltenders, team to dress at least 8 and no more than 12 skaters.
1938-39 - Maximum number of players in uniform increased from 14 to 15.
1942-43 - Player limit reduced from 15 to 14. Minimum of 12 men in uniform abolished.
1949-50 - Clubs allowed to dress 17 players exclusive of goaltenders.
1951-52 - Number of players in uniform reduced to 15 plus goaltenders.
1952-53 - Teams permitted to dress 15 skaters on the road and 16 at home.
1952-53 - Teams permitted to dress 15 skaters on the road and 16 at home.
1954-55 - Number of players in uniform set at 18 plus goaltenders up to December 1 and 16 plus goaltenders thereafter.
1960-61 - Number of players in uniform set at 16 plus goaltenders.
1965-66 - Teams required to dress two goaltenders for each regular-season game.
1971-72 - Number of players in uniform set at 17 plus 2 Goaltenders.
1982-83 - Number of players in uniform set at 18 plus 2 goaltenders.
National Hockey League (NHL) Major Rule Changes