"Impossible!" At first folks didn't believe that the Erie Canal would ever be built. But when it was completed in 1825, people proclaimed it, "Amazing!" Cheryl Harness celebrates America's first superhighway using "words, maps, and pictures to explain the history and commerce of the canal. . . . Full of action and details of human drama, many of the colorful double-page spreads show scenes of jubilation. . . . An upbeat introduction."--"Booklist." Full color.