A Source Book for Ancient Church History, Vol. I (Esprios Classics)

Professor Joseph Cullen Ayer (Jr) (1866-1944) was the American author of A Source Book for Ancient Church History (1913). He was a Professor of Ecclesiastical History in the Divinity School of the Protestant Episcopal Church in Philadelphia. "In the second period of the history of the Church under the Christian Empire, the Church, although existing in two divisions of the Empire and experiencing very different political fortunes, may still be regarded as forming a whole."