"Letters of Marcus Tullius Cicero" by Marcus Tullius Cicero is a collection of letters written between 62 and 43 BCE. The correspondence between Cicero and various public and private figures provides crucial insight into Roman political and social life during the final years of the Republic. These letters, likely first published by Cicero's secretary after his death in 43 BCE, remain among the most reliable historical sources for this turbulent period in ancient history. (This is an automatically generated summary.)