1. Friend and Foe Alike: A Tour Guide to Missouri's Civil War by Gregory Wolk (Monograph Publishing, 2010).
At first glance, Wolk's book appears to fit its billing as "the first comprehensive sesquicentennial driver's guide to Civil War battlefields and sites in Missouri". With five looping tours, it covers the areas where most of the action took place -- St. Louis, Kansas City, and the southwest, southeast, north central, and south central regions of the state. The explanatory text looks to be adequate in depth for such a broad guide and the volume is heavily illustrated with period and modern maps, photos, and drawings. There are sample pages to be downloaded from the author's website.
2. Robert E. Lee by Ron Field and ill. by Adam Hook (Osprey Publishing, 2010).
This is a part of Osprey's Command series, "The background, strategies, tactics and battlefield experiences of the greatest commanders of history". I haven't read any entries from this particular line, but the Lee book has the same length as the typical Osprey offering (64 pgs) and basically looks like a heavily illustrated (w/ photos, paintings, and maps) introductory military biography.
3. At the Precipice: Americans North and South during the Secession Crisis by Shearer Davis Bowman (UNC Press, 2010).
A look at the secession crisis through the eyes of individuals across society's spectrum.