Few books do so much in so little as this one. In sixteen short chapters the authors manage not only to present a key to the Traditional Missal, but also a key to the entire Church Year, as well as a key to the Sacred Liturgy. In addition to the chapters on the seasons of the Church Year, the book gives in two initial chapters authentic information on the history of the Missal and its use, concluding with three chapters on the Feasts of Our Lord, of the Mother of God, and of the Saints. May this book give the reader a greater appreciation for such a treasure as the Traditional Roman Missal!