These are some of the major non-biblical references on the historical Jesus from my database. You should know, by the way, that the overwhelming majority of academic and professional historians accept that Jesus was a being (his miracles, resurrection, etc. are another matter).
This list should be plenty to get you started.
The Evidence from Roman or Roman Empire Sources:
Suetonius, Claudias 25.4. De Vita Caesarum
Life of Nero 16.2
Tacitus, Annals xv.44.
Pliny the Younger, Epistles x.96-97.
Julius Africanus on Thallus
Lucian of Samasota, The Passing of Peregrinus.
Source from a Syrian Philosopher
Mara bar Sarapion:
Josephus, Antiquities 18.116-19
Josephus, Antiquities 20.200,
Josephus, Antiquities 20.200
Eusebius, Ecclesiastical History 1.1.7-8
Eusebius, Demonstration of the Gospel 3.5.105-06
Origen, Against Celsus 1.47
Origen, Commentary on Matthew 10.17.
Rabbinic Sources and Evidence of Debate with the Church Fathers:
b Sanh 43a and 107b
b ‘Abodah Zerah 27b, 16b-17a
Tosefta, Shehitat Hullin
‘Abodah Zerah 16b-17a
‘Abodah Zerah 27b
Justin, Dialogue 69:7
Justin, First Apology 30
Justin, Dialogue 108
Origen, Contra Celsum 1:68.
Justin’s Dialogue 69:7
Many of these titles have been translated into English and are available at University libraries.
Enjoy.
Heterodox but Orthoprax
As fast on the draw...
...as he is in the drawing room!