I am using Pandia Press's - Ancient History Odyssey
We used the optional books: "Marduk The Mighty: and other stories of creation" and "The New York Public Library Amazing Mythology" back when we first started the curriculum.
We also used some other mythology books that we already had.
My kids have been asking to read more about the creation stories. So I ordered: "In the Beginning. Creation stories from around the world" and "Primal Myths"
I was wondering if anyone had any favorites?