1. Fort Davidson and the Battle of Pilot Knob: Missouri's Alamo by Walter E. Busch (The History Press, 2010).
This is not a battle history. According to the author, his Pilot Knob project was originally to be simply a compilation of memorial association booklets, and they do comprise the bulk of the book along with about 60 pages of author narrative.
2. A Perfect Gibraltar: The Battle for Monterrey, Mexico, 1846 by Christopher D. Dishman (U. of Okla Pr, 2010).
Incorporating quite a bit of Mexican source material (mostly published), A Perfect Gibraltar is a worthwhile looking medium length study of the Battle of Monterrey. Unfortunately, there are no original maps (argh!).