Kathy, my grt-grt-grdfather was at Arkansas Post also and I have done some research on this battle . The orginal Arkansas Post(Fort Hindman)battle site is under water from the Arkansas River. The 17th was shotup pretty bad at Arkansas Post and not to say there isn't a muster roll somewhere but I have never seen one and same for photo that I know of. Since Yanks destroyed most everything at Fort Hindman and under water now the where abouts of graves are unknown.