This is the only full-length biography of Severus Alexander available in English
The History of the Decline and Fall of the Roman Empire, Vol. I, Paperback/Edward Gibbon
Edward Gibbon
Blood of Tyrants, Paperback/Naomi Novik
Naomi Novik
Alphabet Squadron - Star Wars
Alexander Freed
The Researchers Library of Ancient Texts, Volume 2: The Apostolic Fathers Includes Clement of Rome, Mathetes, Polycarp, Ignatius, Barnabas, Papias, Ju, Paperback
Alexander Roberts
Victory's Price
Julian, Paperback
Gore Vidal