The Pillars of Aversaria (artifact)
Widely regarded as one of the most comprehensive overviews of proto-Aversarian history, this thick tome is a compendum of the chronicles of what were, at the time of its writing in the early 4th century, considered the eleven greatest city-states of Aversarian antiquity - Orasbael (Oraispol), Tylion (Tylossos), Valthronax (Vathassus), Andron (Andryn), Phaelax (Phanurias), Kadmeibael (modern location uncertain), Gortillon (Gortillai), Naucipax (Naupyrna), Phanara (Phanara), Aspomnox (Aspomnos) and Vysbael (Byzaropol).