File:Bust of Marcus Aurelius Probus in Musei Capitolini.jpg - Wikimedia Commons

Carnuntum, Marcus Aurelius - Livius

Antiquity Folder, @nevenjovanovic2 - dewey.

Why did Rome have so many bad emperors? - Quora

Roman Empire Timeline – Digital Maps of the Ancient World

Probus (emperor) - Wikipedia

Why were there so many statues and busts of emperors in ancient

File:5297 - Brescia - S. Giulia - Ritratto di Marco Aurelio Probo - Foto Giovanni Dall'Orto, 25 Giu 2011.jpg - Wikipedia

Septimius Severus - Wikipedia

File:Bust of Marcus Aurelius (2).jpg - Wikimedia Commons

Who was the strangest Roman emperor? Why? - Quora

File:Young Marcus Aurelius Musei Capitolini MC279.jpg - Wikimedia Commons