Epic of Gilgamesh
The Epic of Gilgamesh is from Babylonia, dating from
long after the time that king Gilgamesh was supposed to have ruled.
It was based on earlier Sumerian legends of Gilgamesh. The most
complete version of the epic was preserved in the collection of the
7th century BC Assyrian king Ashurbanipal[?].
Based on a summary of the Epic (available online here (http://www.wsu.edu/~dee/MESO/GILG.HTM)),
the contents of the eleven stone tablets are:
A twelfth tablet is known to exist, although an intact copy has never been found. A fragment believed to be from the twelfth tablet describes a brief scene wherein the spirit of Enkidu appears to Gilgamesh to console him. An untranslated tablet which may have contained the lost segments of the epic was lost in 2003 during looting in the Iraqi capital of Baghdad.
Although the epic itself was lost for millennia, and is not widely known today, it has had a powerful impact on Western literature. It is likely that the Biblical story of Noah and the flood is a retelling of a portion of the Gilgamesh epic.
The first modern translation of the epic was in the 1870s by George Smith.
Sumerian legends of Gilgamesh
Translations for several legends of Gilgamesh in the Sumerian language can be found in Black, J.A., Cunningham, G., Fluckiger-Hawker, E, Robson, E., and Zólyomi, G., The Electronic Text Corpus of Sumerian Literature (http://www-etcsl.orient.ox.ac.uk/ (http://www-etcsl.orient.ox.ac.uk/)), Oxford 1998-.
Some versions of the texts date from as early as the third dynasty of Ur, 2100-2000 BC.