Steve,
Have you looked at Bacheldar's Maps for July 1? They are detailed and might be able to help you.
Guides do not get into that type of detail with our tours. So we hit the highlights. That being said if we have someone on a tour that has an ancestor or interested in a particular unit, we try to take them to that spot.
Send me an email at phillipmuskett@comcast.net. I have a copy of the Bacheldar maps at home. I will copy that section of the map and forward it to you.
Phil Muskett
Licensed Battlefield Guide