Provence today is a state of mind as much as a region of France, promising clear skies and bright sun, gentle breezes scented with lavender and wild herbs, scenery alternately bold and intricate, and delicious foods served alongside heady wines. Yet in the mid-twentieth century, a travel guide called the region a "mostly dry, scrubby, rocky, arid land." How, then, did Provence become a land of desire--an alluring landscape for the American holiday?...