Munden, K. W., & Beers, H. P. (1986). The Union: A guide to federal archives relating to the Civil War. Washington, D.C.: Published for the National Archives and Records Administration by the National Archives Trust Fund Board.

Munden, Kenneth W., and Henry Putney Beers. The Union: A Guide to Federal Archives Relating to the Civil War. Washington, D.C.: Published for the National Archives and Records Administration by the National Archives Trust Fund Board, 1986.

Munden, Kenneth W., and Henry Putney Beers. The Union: A Guide to Federal Archives Relating to the Civil War. Washington, D.C.: Published for the National Archives and Records Administration by the National Archives Trust Fund Board, 1986.