[EarlKing]

I suppose I could mention the city-states of Mesopotamia such as Sumer, Akkad, and Babylon. They left behind a rather rich literature which survived to this day (thanks to having been written on clay tablets instead of papyrus), though much of it remained inaccessible until the Cunieform script was deciphered in the 1800s. As with Romans and Greeks you'll find a wide variety of texts from the religious and scientific, to legal treatises, to contracts and shopping lists.