There is a website I enjoy visiting from time to time that deals with all things typography: I Love Typography.
I was pointed there recently to an interesting article entitled "Where does the alphabet come from?"
What makes this article interesting is that it goes all the way from ancient cuneiform to modern day English letters. What makes it exceptionally interesting is that it includes references to people and places in the Bible in a positive manner.
Unlike some other "scholarly" work that scoffs at Scripture, this article weaves Biblical references into its message regarding the origins of our alphabet. It is very well written.
One additional note: this article explains who the ancient "purple people" are.
Fascinating stuff! :)