1. The Battle of Wyse Fork: North Carolina's Neglected Civil War Engagement by Timothy W. Auten (Author, 2008).
Although Wade Sokolosky is apparently still at work on one, I am not aware of any other modern Wyse Fork (March 1865) battle histories. From a glance through the footnotes and bibliography, the source material associated with this self published study is predominately O.R., supported by a sprinkling of other sources. The battle narrative itself is quite detailed.
2. Rebels on the Border: Civil War, Emancipation, and the Reconstruction of Kentucky and Missouri by Aaron Astor (LSU Pr, 2012).
Recently, more than a few books have taken detailed looks at unionism and civil rights in Missouri and Kentucky. Astor's book again examines what unionism meant in these states, but he also delves into the recruitment of black soldiers and racial violence during wartime and Reconstruction. Citizenship struggles (for political power, opportunity, education, etc.) comprise additional themes.