Edmund de Waal’s “Letters to Camondo” will fascinate anyone who has projected complicated emotions onto objects. In his award-winning 2010 book, “The Hare With Amber Eyes,” de Waal traced a set of the Japanese miniature carvings known as netsuke as they got passed from one generation of his family to the next, and ingeniously tied the history of European Jews under Hitler to the fate of these precious curios.