The right title is Confederate Papers Relating to Citizens or Business Firms, National Archives microfilm publication M346. This collection contains references to soldiers, government employees, slaves, and civilians involved in business transactions with agents of the Confederate Government. It might also prove helpful in a search for a soldier who can't be identified otherwise. This material is not indexed, being arranged in alphabetical order by name on 1,158 reels of microfilm.

Gas prices being what they are, you might consider calling to ask about M346 before starting your car. If they don't have it, I might be able to help.