Awhile back, I read a book about the remarkable journey taken by Mina Hubbard in 1905, with her deceased husband's Cree/Scots guide, George Elson. With the discussion on an unrelated thread about compasses being a useless item, I recalled stories about Elson's remarkable guiding abilities that Mina talks about in her book. The book is filled with information and some humor as well (imagine walking in the taiga and tundra with a long skirt). The First Nations people on her expedition had a name for the swirling eddies that disrupt balance if you stare down at rushing water, then suddenly look up (you'll fall and potentially be swept away - Mina was swiftly saved from this type of fate, hence the writing about it).
If you're looking for some winter reading, maybe you'd enjoy these:
Great Heart (tells the story of the adventure) Mina's book (1905) More background reading on Mina Hubbard