Use of Helmets
Until the late 1970’s/early 1980’s, it was uncommon for players to
wear helmets.
The first player credited for wearing a helmet was Boston Bruins’
defenseman George Owen in 1928. Owen, a college football player
at Harvard, wore his leather football helmet when he joined the NHL.
The first all-star game (1933-34) was organized as a benefit for
Toronto Maple Leafs “Ace” Bailey, whose hockey career ended due
to head injury. He was not wearing a helmet.
In 1968, North Stars center Bill Masterson hit his head on the ice
during a game and died two days later. He is honored with the
Masterson Memorial Trophy. He was not wearing a helmet.
In the 1979-80 season, the NHL made it mandatory for players joining
the league after that point to wear a helmet.
Craig Mactavish retired in the 1996-97 season, the last NHL player to
play in the NHL without a helmet.
Source: Canadian Hockey Hall of Fame