Here are listed different introductions to the subject.
Stoughton, John. An introduction to historical theology; being a sketch of doctrinal progress from the apostolic era to the Reformation
Crippen, T.G. A popular introduction to the history of Christian doctrine (1883)
Cunningham, William. Historical theology: a review of the principal doctrinal discussions in the Christian church since the apostolic age (1863)
Bromiley, Geoffrey W. Historical theology: An Introduction (1978) ( Read on-line )
McGrath, Alister. Historical Theology: An Introduction to the History Of Christian Thought (1998) (Read on-line)
Here are listed mainly multi volume works which cover the whole history of Christian doctrine.
Schaff, Philip. The Creeds Of Christendom With A History And Critical Notes (1877)
Volume I, Volume II, Volume III (More from Philip Shaff at www.ccel.org )
Sheldon, Henry Clay.History of Christian Doctrine (1886)
Volume I, Volume II
Harnack, Adolf. History of Dogma. Volume I - IV (1893) - from a liberal protestant perspective
Fisher, George Park.History of Christian Doctrine (1896)
Pelikan, Jaroslav. The Christian Tradition. A History of the Development of Doctrine (1971–1989)
Volume I - The Emergence of the Catholic Tradition (100 - 600) (Read on-line)
Volume II - The Spirit of Eastern Christendom (600 -1700) (Read on-line)
Volume III - The Growth of Medieval Theology (600 - 1300) (Read on-line)
Volume IV - Reformation of Church and Dogma (1300-1700) (Read on-line)
Volume V - Christian Doctrine and Modern Culture (Since 1700) (Read on-line)
McGrath, Alister. The Christian Theology Reader, Blackwell Publishing (2007) (Read on-line)
A reader with excerpts from different theologians during the centuries
of church history which are ordered by subject and year. Recommended!
Periods and Traditions
Eusebius Pamphilius from Caesarea. The Church History of Eusebius (NPNF2-01)
Schaff, Phillip. Ante-Nicene Fathers or ANF01-ANF10 (1885) by www.ccel.org This is a classic edition. recommended.
Schaff, Phillip. Nicene and Post-Nicene Fathers or NPNF1 & NPNF2 (1885) by www.ccel.org This is a classic edition. recommended.
Wigram, W. A.An Introduction to the History of the Assyrian Church 100-640 A.D
Download as: DJVU, PDF
Butler, Alfred Joshua, The ancient Coptic churches of Egypt (1884) (Read on-line)
Kamil, Jill. Christianity in the land of the pharaohs: the Coptic Orthodox Church (Read on-line)
Malaty, Tadrous Y. Introduction to the Coptic Orthodox Church (Read on-line)
Eastern Medieval Thought
Meyendorff, John. Byzantine Theology. Historical Trends and Doctrinal Themes (1973)
Read parts on-line from www.holytrinitymission.org as a web page
Read parts on-line in books.google.com
Western Medieval Thought
Pelikan, Jaroslav. The Christian Tradition. A History of the Development of Doctrine. The Growth of Medieval Theology (600 - 1300) (Read on-line)
Fisher, George Park. The Reformation (1873)
This is an excellent book reviewing the reformation in about 520 pages
from many different viewpoints. It includes a political, historical and
theological perspective. Recommended!
Barth, Karl.The Knowledge Of God And The Service Of God According To The Teaching Of The Reformation (1938)
Pelikan, Jaroslav. The Christian Tradition. A History of the Development of Doctrine (1971–1989) Reformation of Church and Dogma (1300-1700) (Read on-line)