Voyageurs.

Mark hitches a ride with the voyageurs who have canoed the rivers, transporting the tons of furs that feed the trade that has made the region a battleground of the French and British empires. Though Mark enters this brave new world with his conscience clean and his convictions sound, his encounters test his rigid upbringing. The backwoods of Canada have certainly led his sister astray; she has been excommunicated from the Society of Friends for running off with a non-Quaker. After her child is stillborn she runs again, deep into Indian country.