I'm sorry, are you asking for a source for how Canada, the fucking British colony, was white supremacist before the US had the amount of influence it has over it today?

The Canadian Constitution, The Indian Act, the 1793 Act Against Slavery (I feel the need to explain to you that the need for this law proves the pervasiveness of chattel slavery here, enough to necessitate restrictions).

There's three, one before confederation, one during, and one after. You racist dipshit.