Driving through British Columbia along the Dawson River canyon, I witnessed some of the most violent and treacherous rapids I've ever seen. I was shocked to find that a stern-wheeled mail packet had negotiated these rapids in both directions for many years, to bring mail to miners and homesteaders along the river. The skill and courage of some of these early Wilderness boatmen must have been incredible.

Another question: what was the name of the Missouri River steamboat that brought the Seventh Cavalry to the mouth of the Bighorn in 1876, and took the remnants back to Dakota after the massacre?