William Randolph Hearst's dazzling "castle" at San Simeon, California, is famous world round, yet only the aficionado can name Julia Morgan as the architect who built it. For more than thirty years she worked with Hearst in a rare collaboration, creating not only his art-filled hilltop palace but also a fairy-tale Bavarian "village" known as Wyntoon and many other commercial and domestic structures. Yet the Hearst commissions, notable as they are,...