O Pioneers! (1913) was Willa Cather's first great novel, and to many it remains her unchallenged masterpiece. No other work of fiction so faithfully conveys both the sharp physical realities and the mythic sweep of the transformation of the American frontier-- and the transformation of the people who settled it. Cather's heroine is Alexandra Bergson, who arrives on the wind-blasted prairie of Hanover, Nebraska, as a girl and grows up to make it a...