The classic and groundbreaking study of penal slavery throughout the ages is finally available again. Previously a rare book, despite the fact that it is widely quoted and cited by scholars in the field of sociology, penology, and criminology, this book can now be accessed easily worldwide and be assigned again to classes.Now in its fortieth anniversary edition, Sellin's classic book adds a new Foreword by researcher Barry Krisberg at Berkeley, and incorporates changes the author originally planned for a second printing, provided to Quid Pro Books by the Special Collections Library at Penn and authorized by his family. Part of the Classics of Law & Society Series from Quid Pro Books, this edition also includes explanatory Notes of the Series Editor by Steven Alan Childress, senior professor of law at Tulane.A book that has become a standard part of the canon in its field, but became too expensive for researchers and libraries to obtain, is now easily downloaded in a well-formatted ebook. Other features include linked Contents and notes, fully linked and paginated Index, and close reading of the text against the original so that its legacy is properly presented.