8 surviving letters between Antoninus Pius and Marcus Cornelius Fronto, spanning 143-161 AD.
“To the Emperor Antoninus Pius Augustus, from Fronto.”
“To Marcus Fronto, from Antoninus Caesar.”
“Fronto to Antoninus Pius Augustus.”
“A rescript from the Emperor.”
“To Antoninus Pius Augustus, from Fronto.”
“Fronto to Gavius Maximus, greetings.”