... If we allow ourselves one month, we'll only have to go four or five times as fast as they did. I've known a flat bottom 'John boat' do forty miles a day on the Current River of Missouri with only one outboard motor; and that's a six-mile current, good and stiff. Let us not count our chickens just yet, but keep on plugging. I must say Rob is a wizard with the engines, this ... — The Young Alaskans on the Missouri • Emerson Hough