Calendar

Eusebius – https://librivox.org/eusebius-history-of-the-christian-church-tr-by-mcgiffert/ Epistle to Diognetus – https://en.wikipedia.org/wiki/Epistle_to_Diognetus – http://librivox.bookdesign.biz/book/108574 – http://www.earlychristianwritings.com/text/diognetus-roberts.html Athenagoras – https://en.wikipedia.org/wiki/Athenagoras_of_Athens – http://www.newadvent.org/fathers/0205.htm Letter to the Churches in Lyons and Vienne – http://www.earlychristianwritings.com/viennalyons.html – http://www.earlychristianwritings.com/text/viennalyons.html Theophilus of Antioch – https://en.wikipedia.org/wiki/Theophilus_of_Antioch – http://www.newadvent.org/fathers/02041.htm – http://www.newadvent.org/fathers/02042.htm

https://librivox.org/eusebius-history-of-the-christian-church-tr-by-mcgiffert/ http://www.newadvent.org/fathers/250109.htm http://www.newadvent.org/fathers/250110.htm

http://magisterkeil.com/wp-content/uploads/2021/03/DOC025-1.pdf

https://en.wikisource.org/wiki/Nicene_and_Post-Nicene_Fathers:_Series_II/Volume_I/Constantine/The_Life_of_Constantine