Ad Limina Apostolorum

Karl Barth, because of poor health, was unable to accept the invitation to be an observer at the final two sessions of Vatican II. When his condition improved, however, he was eager to make a trip to Rome to learn firsthand how the Council decisions were understood at the heart of Catholicism. The Secretariat for Christian Unity readily agreed, and so Barth made his pilgrimage "to the threshold of the Apostles" September 22-29, 1966.Included here are an account of Barth's trip to Rome, questions