Welcome to the Civil War in the Trans-Mississippi! This is a place where all who share an interest in the Civil War fought west of the Mississippi River can gather to ask questions, share information, and announce news.
I noticed a while ago that Tom Broadfoot of Wilmington NC has just published 3 volumes of Union and Confederate correspondence as part of his "Supplement to the Official Records" series which I initiated and work on.
There's a lot of good material there, so you may want to consider buying these volumes.