The Holy Bible: English Standard Version. In progress 
Death's End, by Cixin Liu. In progress 
Truth in Religion: The Plurality of Religions and the Unity of Truth, by Mortimer Adler. In progress 
The Rubaiyat of Omar Khayyam, by Omar Khayyam. As with many volumes I finally have made time to read I wish that I'd read this many years ago. It stands as a worthy companion to the works of Rumi, Ecclesiastes, and the Tao Te Ching. 
Flintknapping: Making & Understanding Stone Tools, by John C. Whitaker. A rich resource for those who want to make stone tools or just understand their place in pre-history. 
Mr. Gatling's Terrible Marvel: The Gun That Changed Everything and the Misunderstood Genius Who Invented It, by Julia Keller.  A social history about the man and his times, the application of patent law, the rise of industrialization, the internecine machinations of weapons procurement by the American military establishment, and the role of military technology applied to the acquisition and defense of empire. Regrettably, this book contains very details about the innovative gun itself, its evolutions, or its re-adoption in modernized form in the Jet Age. Not what I expected.
Let's read 48 books in 52 weeks...