The Perennial Philadelphians tells the story of the city's inherited aristocracy--of Wanamakers and Drexels, of Biddles and Cadwaladers. Drawing on history, genealogy, politics, economics, the fine arts, private diaries, and the impressions and anecdotes of myriad living witnesses, Nathaniel Burt paints a fascinating portrait of Old Philadelphians. He traces the succession of a dynasty of doctors or lawyers, explores the country club scene,...