For the 8th Missouri Infantry, of course as mentioned in previous threads, "Serving With Honor: The Diary of Captain Eathan A. Pinnell of the Eighth Missouri Infantry (Confederate)" Edited by Michael E. Banasik, Iowa City, IA: Camp Pope, 1999. Still available through Camp Pope Bookstore. The battle of Pleasant Hill is mentioned there. I spoke with the park historian at the Battle of Prairie Grove in Arkansas and they have gathered information of the 8th Mo (CSA) including photos of some members.