Very, very few archeologists in Arkansas are concerned about historical archeology. If it doesn't have to do with prehistoric Indian sites, they don't want anything to do with it. Jerry Hilliard and Jami Lockhart (Jami uses GPR) and Jaime Brandon at SAU are a few that are. They recently spent almost a year here at Prairie Grove looking for battlefield features for us, including original burial trenches. Talk to them. If fees end up being involved you can get a grant to cover them.