Dawn, I'm sure you must have received an answer to you inquiry long ago, but I looked up the two people that you asked about in the History of Whiteside County by W.W. Davis. On page 441, Nicholas S. Mason, A, 34th IL Inf. The heading that he is listed under is: deceased soldiers buried in Grove Hill Cemetery. On page 237, John Still, 46th IL Veteran Volunteer Infantry. He is in a list of soldiers who enlisted at original organization. Janet