I am looking for the burial of a Union Soldier. He died in the battle of Helena, 4 Jul 1863. He was in Co G, 29th Iowa Infantry. His name was James Conley. He was the brother of my great grandfater. I have searched (online) cemeteries in the area and found nothing. I live in Washington State and cannot get to Arkansas to search in person. Where could he possible be buried, I need a clue.