Hello Jim,
I have a copy of the photo of Samuel Wells. He actually served in Compny H, along with my GGGgrandfather, John Hiram Kelton. I have written a regimental history of the 31st/39th Tennesse Mounted Infantry, entitled, "Suffered Greatly By Privations". It is available on Amazon. There is also a yahoo group dedicated ot the men of the 31st/39th Tennessee.
Sincerely ,
Glenn Stacy