'In this deeply researched, well-written and accessible book, Kenneth Morgan highlights the dynamic, often erratic effort to end the slave trade to the US. Building on the pioneering work of W.E.B. DuBois, Morgan's work provides an important historical account of the movement to end the slave trade.' Julie L. Holcomb, author of Moral Commerce: Quakers and the Transatlantic Boycott of the Slave Labor Economy and editor of Quaker History 'This book offers by far the best guide through the maze of colonial, state, and federal legislation on the transatlantic slave trade. Kenneth Morgan has done the field a great favor.' Sean M. Kelley, Professor of History at the University of Essex. He is the author of American Slavers: Merchants, Mariners, and the Transatlantic Commerce in Captives, 16441865 'Proscription By Degrees is the most significant addition to scholarship on the abolition of the trans-Atlantic slave trade to have appeared in a great many years. Morgan's excellent book will become required reading for everyone interested in this subject.' Simon P. Newman, Professor Emeritus, University of Glasgow. He is the author of Freedom Seekers: Escaping from Slavery in Restoration London