A friend mentioned paddling the Cochrane River in northern Saskatchewan today. Not knowing much about the river, I Googled it. I found some interesting things, but among them was this resource that I thought was pretty neat, the book Canoeing North Into the Unknown: A Record of River Travel, 1874 to 1974, by Bruce W. Hodgins, Gwyneth Hoyle. It seems to be a listing of various folks that have paddled many northern Canadian rivers.
Here's a sample, from the Cochrane River:
You don't have to peruse very far before you start seeing some pretty familiar names, Downes, Patterson, Trudeau, Morse, Olson, Luste, Jacobsen, etc.
It looks like the book is out of print and rather expensive ($140 used on Amazon.ca), but it's going on my book list for sure (never know what you might come across at a garage sale or used bookstore).