The following are suggestions we've received for non-theist-themed literature. Clicking a title will bring up Google's helpful BookSearch feature that will give an in-depth summary, images, and purchase information for a given title.

Author - Title
Albright, Madeline - The Mighty and the Almighty: Reflections on Faith, God, and World...
Dawkins, Richard - The God Delusion
Dawkins, Richard - The Selfish Gene
Hitchens, Christopher - God Is Not Great: How Religion Poisons Everything
Russell, Betrand - Why I Am Not a Christian and Other Essays...