XIII Books, Arouca Press’s new imprint dedicated to the social doctrine of the Church, is proud to release a new edition of Fr. Joseph Husslein’s masterful book, The Reign of Christ, a magnificent exegesis of Pope Pius XI’s Quas Primas (On the Feast of Christ the King) perfectly timed to celebrate the encyclical’s centennial in 2025. Featuring a foreword by renowned author Charles A. Coulombe and the full text of His Holiness’s Quas Primas and Miserentissimus Redemptor (On Reparation to the Sacred Heart), this edition of Fr. Husslein’s classic is a feast for the famished eager to comprehend the oft unexplored teaching on the Social Kingship of Christ.