Hi "Wes" (what is your name?) -
if you haven't already interacted with him, get together with Michael Howell in Jackson, LA. He is VERY knowledgeable re Logan's cavalry and can help you fill in the pieces.
Michael gave me a tour of the Jackson and Clinton battlefields several years ago. I think there is now a walking tour of the Jackson battlefield that Michael helped organize and put together.
y.v.o.s.,
Kenneth Byrd