I also should mention that I enjoyed reading Dr. Karamanski's work as it has served to stimulate desire in looking for other places to canoe, beside just the Boundary Waters.  Imagine canoeing up and over MacDougall Pass, in the far northwest of the Yukon, and crossing the lowest height of land in the rockies, then paddling along the Rat and Porcupine rivers, as well as the Husky Channel.  
Also think of paddling the Yukon or the Laird rivers.  Wow.