Went back to the book sale today and picked up:
Big Coal: The Dirty Secret Behind American's Energy Future (hc) by Jeff Goodel - $1.
The Quotable Einstein (hc) edited by Alice Calaprice - $1.
Soldiers of Reason: The RAND Corporation and the Rise of the American Empire (hc) by Alex Abella - $1.
On the Shoulders of Giants (hc) edited by Stephen Hawking - $1.