Gilgamesh is the one I have not had my hands on thanks again!!!
I suggest the Cliff's Notes abbreviated version if you can find one before reading the whole thing! Back in high school I read a ton of Cliff's Notes booklets and used those to decide what to read in full.
With old books the question is - Do they count as a VSL? Masonicly inspired separation of church and state only happened a few centuries ago. Go back far enough and every book is a legendary account that can be considered religious or mundane based greatly on the viewpoint of the reader. Truly ancient books like Gilgamesh, Iliad, Odyssey, Rig Veda, Torah, Egyptian Book of the Dead all have religious content. Which ones count as a VSL isn't an easy question to answer. Is the case for calling Gilgamesh a VSL weak? Source culture for Abraham suggests it's important either way. Is case for calling the Egyptian Book of the Dead a VSL stronger? Moses had an Egyptian education and Solomon built his temple to emulate Moses' tabernacle.
Oops, I just added the Egyptian Book of the Dead
http://en.wikipedia.org/wiki/Egyptian_Book_of_the_Dead At 2500 BC it appears to be roughly the same age as Gilgamesh. There are very few books this ancient - If I learn of one that might beat these ones I'll try to remember to post about it.