Enrico Dal Lago teaches American History at the National University of Ireland, Galway. He is the author of Agrarian Elites: American Slaveholders and Southern Italian Landowners, 1815-1861 (2005) and co-editor of and contributor to three additional books on slavery. He is completing a monograph comparing American abolitionist William Lloyd Garrison with Italian nationalist Giuseppe Mazzini.
Constantina Katsari is Lecturer in Ancient History at the University of Leicester and a Fellow of the Royal Numismatic Society. Her publications include numerous articles and reviews on the Roman economy, comparative slavery and ancient identities, as well as three co-edited books: Patterns in the Economy of Roman Asia Minor (2005, co-edited with Stephen Mitchell), Slave Systems: Ancient and Modern (2008, co-edited with Enrico Dal Lago) and From Captivity to Freedom: Themes in Ancient and Modern Slavery (2008, co-edited with Enrico Dal Lago).