When and how did helmets become mandatory in hockey? - Quora
Just a small group of visor-less players remaining in NHL
NHL players shrug off concerns after Barron's skate to face
NHL No Helmet Plays - YouTube
Hockey smiles: Many players opt not to replace their missing teeth
Glenn Anderson - Wikipedia
Go with the flow: Panthers' coifs enjoy freedom on the ice during warmups - The Athletic
Who was the last NHL player to not wear a helmet and is it still allowed?
NHL's helmetless warmups persist despite safety issues - Sports Illustrated
NHL GMs propose new rule for players who lose helmet in game
Death of a player from a skate to the neck reignites hockey's stubborn debate over protective gear | Lethbridge News Now
NHL Visors: Only a handful of players go without - Sports Illustrated
Freeze the Puck Hockey - #TodayinNHLHistory April 20, 1997: Craig MacTavish of the St. Louis Blues, the last player to appear in an NHL game without a helmet, played his final game
Hockey helmet - Wikipedia
NHL99: A project ranking the greatest players in modern NHL history - The Athletic
Craig MacTavish's NHL Career and Life Changed Forever When He Killed a Woman By Committing a 'Fatal Mistake'
Ice hockey players have been 'stubborn' about wearing neck protection. That might be about to change | HealthWatch | kdrv.com
Krug's old-school helmetless shift may soon be a thing of the past | CBC Sports
Old-time hockey, if only for a bit: Preds player without helmet lets locks flow | Sporting News Australia
The Last Helmet-Less NHL Player - The Craig MacTavish Story - YouTube
