Verdun Maple Leafs
Thats for sure, some great players coming up through that league, Juniors & Seniors. Mainly a feeder league for the Ontario Major Junior League, though looks like in a great many cases they stayed playing in Quebec as opposed to moving west while still eligible to play Jr.... were or did the Verdun Maple Leafs have some sort of loose affiliation with Toronto? Or was that name & logo selected for purely altruistic reasons? They appear to have previously just worn a big 'V' on their jerseys, team logo, and it looks like they had close rivals in the Verdun Terriers for some time as well.
Verdun Maple Leafs were semi independent with links to the Montreal Canadiens - Bob Berry, Guy Lapointe, Guy Charron, Judes Drouin amongst others went the Verdun Maple Leafs ---> Junior Canadiens, Peterborough route.
Do not recall the Toronto Maple Leafs sponsoring a Quebec based junior team in any league. A few players would make it to St. Mike's via the Catholic schools or the "old boys" The other NHL teams tended to have junior teams in central Quebec. Rangers in Quebec City, Drummondville, with some contacts in Montreal, sponsored some east end Montreal teams called the Rangers or Biltmores, also s bit in Lac St. Jean getting Jean Ratelle, Boston in Victoriaville plus some in Montreal - Bernie Parent, Gilles Marotte.
Detroit and Chicago did very little with teams but had scouts getting players for their OHA teams.