My colleague Rod Mullen has a new book just out from Brill. Details:
The Expansion of Christianity: A Gazetteer of its First Three Centuries is published in the Vigiliae Christianae Supplements series. The volume covers the geographical spread of Christianity in its first three centuries. It is arranged by continents - Asia, Europe and Africa - to show the gradual development of Christian communities down to the Council of Nicaea in 325. The area surveyed stretches from Wales to the borders of India, and from the Northern coasts of the Black Sea to the plains of Morocco. The result is a picture not only of the outward development of early Christianity but of the variety that existed within it as well.
Leiden: Brill, 2004
ISBN 90 04 13135 3 (hardback)