✝O4 Bishops and Apostolic Succession

Catholic Encyclopedia on  Apostolic Succession:
https://www.newadvent.org/cathen/01641a.htm

IMAGE CREDIT:

Wolfgang Sauber | CC BY-SA 3.0

Anonymous, ~1180 St Peter Consecrating St Hermagoras as Bishop of Aquileia in Presence of St Mark

Fresco from the Basilica of Santa Maria Assunta

Via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Aquileia_Basilica_-_Krypta_Fresco_Bischofsweihe_Hermagoras.jpg