Early Christianity in the Roman World
- AD112: Christianity at the time of Pliny's Letter to Trajan
- AD250: Christianity at the time of Decian Persecution
AD112: Christianity at the time of Pliny's Letter to Trajan

The AD 112 map shows the spread of Christianity at the time of the persecution of Christians by Pliny in Bithynia in North-Western Asia Minor. It marks cities where Christian communities are attested by this date, from the New Testament and the Letters of Ignatius of Antioch.
AD250: Christianity at the time of Decian Persecution

This map shows Christianity at the time of the first General Persecution, by the Emperor Decius. Note the increasing density of the Christian population in Syria and Western Asia Minor, as well as the spread of Christianity in the Western half of the empire.
This key indicates the names of the cities numbered on the map above.
| 1. Londinium | 2. Trier | 3. Lyon | 4. Sirmium |
| 5. Serdica | 6. Byzantium/Constantinople | 7. Nicaea | 8. Ancyra |