This primary source comes from the Records of the Adjutant General's Office.
National Archives Identifier:
300399Full Citation: Enlistment paper of William F. 'Buffalo Bill' Cody from his compiled military service record, 7th Kansas Cavalry, Civil War; 2/19/1864; Records of the Adjutant General's Office, Record Group 94. [Online Version, https://docsteach.org/documents/document/enlistment-papers-buffalo-bill-compiled-military-service-record, May 1, 2024]