Roch Carrier's book The Hockey Sweater is an iconic piece of Canadian literature ever written. The 1979 short story (it became an animated film in 1981 and children's book in 1984) takes place in 1946, the days of Rocket Richard and the good ol' days of the Original Six featuring the forever rivals Montreal Canadiens and Toronto Maple Leafs.
The story is about a young child in Quebec who, like all young hockey fans in Quebec at the time, was a fan of the Montreal Canadiens and particularly a fan of Maurice Richard. All his hockey playing friends wear Canadiens sweaters with Richard's number 9 on the back. When his mother orders him a new sweater from the Eaton's department store, he is mistakenly sent a sweater of the Toronto Maple Leafs instead. Nothing could be more unthinkable - there is no way he could wear the sweater of the Canadien's bitter rival.
The only thing more unthinkable might be Rocket Richard himself wearing the blue and white of the Toronto Maple Leafs.