references a wealth of unpublished texts held at the Library of Congress. There are 52 manuscripts described in this volume, among a selection of John Chrysostom's ascetic works in Latin, expositio mystica super vos qui transituri, Petrus Comestor's Historia scholastica, Guillaume Peyrauts Summa de vitiis, Nicolaus de Gorran's Distinctiones and Moralitates de XLII Mansionibus, Jacobus de Voragine's Legenda aurea and Sermones de sanctis et festis, pseudo-hieronymiana, Ambrose of Milan's Exameron, Thomas Aquinas' In librum quartum Sententiarum, Antonino Pierozzi's Specchio di coscienza, several "decretum", acts from the Council of Basel, Benedictine rule for nuns as well as Carmelite materials, and many other manuscripts. Also included are a general index, indexes of illustrative matter, of former owners, of secundo folio, and of initia, and a concordance of old and new designations.