The Library of Virginia has a Department of Confederate Military Records, 1859-1996, Accession No. 27684, which includes "correspondence, muster rolls, payrolls, clippings, descriptive rolls of pay and clothing, powers of attorney, rosters, printed materials, scrapbooks, letter books, general and special orders, certificates, photograps and other sundry items" according to the collection description. The link is http://www.lva.lib.va.us/findaid/27864-intro.htm