In looking in my library at the new types, I see many works written ABOUT confessional documents that are tagged AS confessional documents. Eg. von Harnack, and Swete on the Apostles' Creed, Burn on the three creeds, Schaff Creeds of Christendom, Stevenson Creeds, Councils, and Controversies, Wesley's Short Commentary on the Church Catechism, etc.
SDG
Ken McGuire