Courtesy of the University of Chicago. Here are some titles (but follow that link):

Gelb, The Sumerians: Their History, Culture, and Character

Gelb, A Study of Writing

Frankfort, Kingship and the Gods: A Study of Ancient Near Eastern Religion as the Integration of Society and Nature

Frankfort, Jacobsen, Wilson, The Intellectual Adventure of Ancient Man: An Essay on Speculative Thought in the Ancient Near East