Works of history.
Thucydides - History of the Peloponnesian War
Urofsky - Louis. D. Brandeis: A Life
Rakove - Original Meanings: Politics and Ideas in the Making of the Constitution
Appleman - East of Chosin: Entrapment and Breakout in Korea
Fisher - Paul Revere's Ride
Murphy - Wild Bill: The Legend and Life of William O. Douglas
Akbar - Tinderbox: The Past and Future of Pakistan
Massie - Dreadnought: Britain, Germany, and the Coming of the Great War
I threw it out a few weeks ago, including a few books I had only just bought the week before. So far haven't missed it at all.