A new exhibit at the Jewish Museum in New York City, The Hare with the Amber Eyes, tells the story of the Ephrussi family, celebrated in memoirs of 2010 and The New York Times bestseller of the same name by Edmund de Waal and showcases the breadth and depth of their history and illustrious collections. Members of the Ephrussi family included the founder of a grain and oil distribution company in Odessa, financiers and owners of noble residences in Vienna and on the French Riviera. One of its most prominent members, Charles Ephrussi, was editor-in-chief of Gazette of Fine Arts,...