1. The Bristoe Campaign: General Lee's Last Strategic Offensive with the Army of Northern Virginia October 1863 by Adrian G. Tighe (Xlibris Corp., 2010).
If we don't count the H.E. Howard published entry [in a wildly uneven series, I don't know how substantive the Bristoe book was], this is the first full length treatment of the 1863 Bristoe Station Campaign. Though self published, Tighe's book has all the trappings of a scholarly effort and includes around 60 better than average looking maps.
2. Boys of Diamond Hill: The Lives and Civil War Letters of the Boyd Family of Abbeville County, South Carolina edited by J. Keith Jones (McFarland, 2011).