"How do we become who we are anyway?" asks Sinclair Lewis biographer Richard Lingeman in his Foreword to this fresh look at the early life and young adulthood of the first American to win the Nobel Prize for Literature. "How did a skinny, voluble, dreamy, acne-complexioned, paprika-haired, Yale-educated country doctor's son named Harry Lewis from Sauk Centre, Minnesota, become the world-class American author Sinclair Lewis?"To answer this question,...