In this paper originally composed shortly after the founding of the Pontifical Oriental Institute, Ignatius Ephrem II Rahmani (1848-1929), Syrian Catholic Patriarch and Syriac scholar, known especially for his Studia Syriaca (5 vols., available from Gorgias Press), gives a survey of the Church at Antioch and its relationship to other churches, especially the Roman. In addition to the historical examination, Rahmani offers a number of unedited texts (all Syriac, except one in Arabic) together with Latin translations. These texts cover thirty-two pages and the documents touch on ecclesiastical geography, canons, liturgy, and other subjects, and represented authors include Ephrem, John Chrysostom, and Jacob of Edessa.