Continuing a project begun in 2002, with the publication of volume 1 of Mediaeval Commentaries on the "Sentences" of Peter Lombard, this volume fills some major lacunae in current research on the standard textbook of medieval theology. Twelve chapters study the tradition of the Sentences, from the first glosses of the twelfth century through Martin Luther's marginal notes. The questions addressed in these chapters throw light on the history of the Sentences literature as a whole, focusing on changes in literary structure and methodology as much as on matters of textual transmission and doctrinal content. The conclusion synthesizes the individual contributions, succinctly presenting the current state of our knowledge of the main structures that characterize the tradition of the Sentences. Contributors: Magdalena Bieniak, John F. Boyle, Stephen F. Brown, Marcia L. Colish, William O. Duba, Michael Dunne, Russell L. Friedman, Olli Hallamaa, Pekka Karkkainen, Hans Kraml, Gerhard Leibold, Riccardo Quinto, Philipp W. Rosemann, Chris Schabel, and Hubert Philipp Weber.