Shawn,
I am not sure about maps for that action. I used to have a link for maps from the United States Military Academy but I can't find it. Might have accidently deleted it. Anyway, I will search for that link again and if I find it will let you know. Also another source might be the Army War College at Carlise PA. They have lots of records in thier archives. I have a friend who is a Light Colonel who is going through the program out there right now and he tells me that there is an abundance of Civil war Material. I was trying to find the morning reports of the 90th Illinois Infantry of which my Great Grandfather was part of and asked him if and when he had time to try to find it for me. He only found part of it and it was late 64 to the end of June 65. DId not contain what I wanted but bless his heart, he tried.