A member of the same intellectual generation as Harold Innis, Northrop Frye, and George Grant, Donald Creighton (1902-1979) was English Canada's first great historian. The author of eleven books, including The Commercial Empire of the St. Lawrence and a two-volume biography of John A. Macdonald, Creighton wrote history as if it "had happened," he said, "the day before yesterday." And as a public intellectual, he advised the prime minister of Canada,...