There is a good mini-history of this unit on Dr. Ken Jones' website at http://www.tarleton.edu/~kjones/alcav.html#53rd-Cav

Also found on his website:
Whetstone, Adam Henry. History of the Fifty-Third Alabama Volunteer Infantry (Mounted). (University, AL : Confederate Publishing Co., 1985)

I don't know where you are located, but as I recall, the Birmingham Central Library has this book.

Independence is two miles southeast of Evergreen in Autauga County.