The bishoprics in Mesopotamia according to the records of the First Ecumenical Council of Nicaea (325 AD):
Edessa
Nisibis
Resaine
Macedonopolis
Persis
Honigmann, E. (ed.), “La liste originale des peres de Nicee (Apropos de l’ eveche de Sodoma: en Arabie)”, Byzantion 14 (1939).