تاريخ الطبري
The medieval Persian poet Ferdowsi, author of the Iranian national epic the "", can be considered the "founder" of Iranian studies in the sense that in his work he made a deliberate effort to highlight Persian culture prior to the Arab conquests. In this sense Ferdowsi's nationalistic approach can be contrasted with that of Muhammad ibn Jarir al-Tabari, the famous ninth-century Iranian historian whose "History of the Prophets and Kings" reflects a more specifically Islamic perspective. Ferdowsi's work follows earlier semi-historical works such as the lost Sasanian-era "Khwaday-Namag".