In recent literature on the history of the Second Vatican Council, the schema De fontibus revelationis is a constant point of reference. In most cases, its utter rejection during the conciliar debate on revelation, biblical exegesis, and the nature of Scripture and Tradition, is regarded as a milestone for the council's development. This book is devoted to the background, genesis, and evolution of that very document, and offers a critical revision of the way in which the document has been received in conciliar historiography, based upon a study of archival material. The result is a new approach, not only of the conciliar revelation debate, but also of the way in which the conciliar preparation period has been regarded up until the present day.