“Before the Black and White Ball, no one had ever imagined, let alone attended, a formal party with a guest list so wildly catholic that it brought into one room the poet Marianne Moore and Frank Sinatra, Gloria Vanderbilt and Lionel Trilling, Lynda Bird Johnson and the Maharani of Jaipur, the Italian princess Luciana Pignatelli (wearing a 60-carat diamond borrowed from Harry Winston) and the documentary filmmaker Albert Maysles.”