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there are four two linesmen and two referees
National Hockey League was created on 1917-11-26.
National Women's Hockey League was created in 1999.
Four officials are actually on the ice. There are two referees (the guys with orange armbands) and two linesmen.
The American Hockey League. (AHL)
English National Ice Hockey League was created in 1996.
Uruguayan National Roller Hockey League was created in 2008.
It is a league that has many different branches, theres a junior league, western hockey league, and so on, but the main league is the national hockey league which is composed of 30 teams.
National Hockey League Players' Association was created in 1967-06.
Hockey helmets were also not used till the 1970s and were directed by the National Hockey League during 1979-1980.
National Hockey League All-Star Game was created in 1947.
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