Eusebius History of the Christian Church

Eusebius presents the history of the Church from the apostles to his own time, with special regard to the following points:
1. the successions of bishops in the principal sees
2. the history of Christian teachers
3. the history of heresies
4. the history of the Jews
5. the relations to the heathen
6. the martyrdoms. (Summary adapted from Wikipedia)