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.
Like Clark mentioned above, I would recommend Robert Kerby's "Kirby Smith's Confederacy". It is still the most comprehensive single source book-length study of the Trans-Miss. Dept. (from 1863-65). Lots of discussions on economic factors and procurement so you may find stuff that interests you.