The Department of the Arkansas was created on January 6, 1864, to consist of Union occupied Arkansas, except Fort Smith. Fort Smith was merged into the Department of the Arkansas on April 17, 1864.
- "Dyer's Compendium (Union) Western Departments and Armies". Retrieved 2014-04-25.
- Senate Documents, Otherwise Publ. as Public Documents and Executive. Washington, DC: United States Congress, Senate. 1868.
- United States War Department (1891). Lt. Col. Robert N. Scott (ed.). The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies. Washington, DC: United States Printing Office.CS1 maint: uses authors parameter (link)