Historian Hugh Thomas has written a new major work on the history of slavery, "The Slave Trade: The Story of the Atlantic Slave Trade: 1440-1870" (Simon & Schuster). It's based on his thirty years of research in archives and libraries throughout the world. His book includes written accounts, published for the first time, and an examination of the traders and the countries who profited most. Kirkus Reviews calls the book "A masterful survey." Thomas is a former professor of history and Chairman of the Centre for Policy Studies in Britain.