What Is Left Behind features photographs of items at estate sales that explore themes of memory, mortality, and cultural history. Norm Diamond has visited countless estate sales, photographing objects that evoke sadness, humor, and ironic commentary on our cultural history. The articles defy conventional expectations: a science project from 1939; a century-old letter from a rejected lover; a complete collection of Playboy magazines. Poignant photographs of these possessions reveal clues about otherwise unknowable people. These items take on lives of their own, both in these photographs and in the idea that they will now move on to new owners.