Kudos on the Confederate Arkansas Artillery,Cavalry, and Infantry units. I was looking at the references on the Helena Artillery and you might consider including the following book: "Two Soldiers; The Campaign Diaries of Thomas J. Key, C.S.A. and Robert J. Campbell, U.S.A." edited by Wirt Armistead Cate. It was published many years ago by the University of North Carolina Press at Chapel Hill. Perhaps some of the references cited actually utilized this book. If so, please disregard.

BG