If you are interested in the 22 Oct. 1862 ambush of the 5th Il Cavalry at the McAlpin Plantation by Confederate partisans, please see my article: "The Hard Lessons of War: The Fifth Illinois Cavalry at Helena, Arkansas," published in the Journal of the Illinois State Historical Society, vol. 99, no. 3-4 (Fall-Winter, 2006-07): 185-210. If you cannot find a copy, which I believe is available via the web, I can upload to you. Just let me know.
Rhonda M. Kohl