69th Infantry History
Adjutant General's Report: The Sixty-ninth Regiment was organized at Camp Douglas, Chicago, and was mustered into service June 14, 1862. It remained at Camp Douglas, guarding the camp and rebel prisoners.
Historial Encyclopedia of Illinois and History of Rock Island County: The Sixty-Ninth Illinois Infantry was a three-month regiment that remained on duty during its period of service at Camp Douglas, Chicago, guarding the camp and prisoners of war. It was mustered into service June 14, 1862, with Thomas J. Pickett as lieutenant-colonel and Ezra M. Beardsley as adjutant.
Dyer's Regimental History from A Compendium of the War of the Rebellion, vol. III, Regimental Histories by Frederick H. Dyer 
(First Regiment Name 69 Illinois Infantry Side Union Company F Soldier's Rank_In Pvt. Soldier's Rank_Out Pvt. Alternate Name Notes Film Number M539 roll 35
UNION ILLINOIS VOLUNTEERS
69th Regiment, Illinois Infantry
Organized at Camp Douglass, Chicago, Ill., and mustered in June 14, 1862, for three months. Assigned to guard duty at Camp Douglass till September. Mustered out September 27, 1862.
Regiment lost 13 by disease during service." [Transcribed 27 July 2006; SLJuhl, compiler]