Books to look at include:

1. Ayres, Thomas. "Dark and Bloody Ground: The Battle of Mansfield and the Forgotten Civil War in Louisiana." Dallas, TX: Taylor Trade Publishing. 2001.
2. Joiner, Gary D. "Through the Howling Wilderness: The 1864 Red River Campaign and Union Failure in the West." Knoxville, TN: The University of Tennessee Press. 2006. (Discusses Mansfield and Pleasant Hill)
3. Winter, John D. "The Civil War in Louisiana." Baton Rouge: Louisiana State University Press. 1963.
4. Johnson, Ludwell H. "The Red River Campaign: Politics & Cotton in the Civil War." Baltimore: Johns Hopkins Press. 1958.
5. Taylor, Richard. "Destruction and Reconstruction." New York: D. Appleton and Co. 1879.
6. Poche, Felix Pierre. "A Louisiana Confederate: Diary of Felix Pierre Poche." Edited by Edwin C. Bearss. Natchitoches, LA: Louisiana Studies Institute, Northwestern State University.1972.
7. Irwin, Richard B. "History of the 19th Army Corps of the Union Army During the American Civil War." Leonaur - 2009 reproduction of 1892 edition.
8. Williams, Richard Brady. "Chicago Battery Boys: The Chicago Mercantile Battery in the Civil War's Western Theatre.: New York: Savas Beatie, LLC. 2005.
9. Whitcomb, Caroline. "History of the Second Massachusetts Battery, Nim's Battery, of Light Artillery, 1861-1865."Concord, NH: The Rumford Press. (Not sure of Publication Date - 1912?)

Hope this helps. If I think of anything else, I will let you know.

Don Parker