"To follow the journeys made by Mackay and Evans up the Missouri and across the plains in 1795-97 is to begin to appreciate the kind of world Lewis and Clark found when they voyaged up the river in 1804. . . . Of all those waterways, none has captured the American imagination more than the Missouri. . . . It is a river of promise, of dreams, and of dreams denied." -James P. Ronda, from the Foreword When Mackay and Evans...