Konkordienformel
The other documents come from the earliest years of the Lutheran Reformation (1529–77). They are the "Augsburg Confession", the "Apology of the Augsburg Confession", both by Philipp Melanchthon, the "Small" and "Large Catechisms" of Martin Luther, his "Smalcald Articles", Melanchthon's "Treatise on the Power and Primacy of the Pope", and the "Formula of Concord", which was composed shortly before the publishing of the Book of Concord and intended for the same purpose: the pacification and unification of the growing Lutheran movement. The preface of the Book of Concord was considered to be the preface of the "Formula of Concord" as well.