How the chaos, needs, and rivalries of post-Second World War Jewish collectors and institutions played into [Szajkowski's] hands, is the subject of Lisa Moses Leff's engrossing and painstakingly documented book. Her research was made all the more demanding by the fact that there is no way of knowing all that is actually missing from collections. It is the wider context of her book that is so fascinating, for it raises important questions about the very nature of archives themselves, particularly what she calls 'archives of catastrophe.'