This is a must buy!
Providing a wide array of early church writings translated into English, Faith of the Early Fathers offers excerpts of critical theological developments in the first seven centuries of Christian history. From Clement of Rome and Polycarp to Augustine and Basil, and from Chrysostom to Ambrose and Jerome, these volumes track the formation of Christian doctrine—both the orthodox and the heretical.
http://www.logos.com/product/31138/faith-of-the-early-fathers