Constantin Grebner, “We Were the Ninth”: A History of the Ninth Regiment Ohio Volunteer Infantry, April 17, 1861 to June 7, 1864, trans. and ed. Frederic Trautmann (Kent, Ohio: Kent State Univ. Press, 1987).
Kenneth A. Hafendorfer, Mill Springs: Campaign and Battle of Mill Springs, Kentucky, January 19, 1862 (KH Press, 2001)
Barnett, James. "Crime and No Punishment: The Death of Robert L. McCook." Cincinnati Historical Society Bulletin 22 (January 1964): 29-37.
Starr, Stephen Z. "Camp Dennison, 1861-1865." Bulletin of the Historical and Philosophical Society of Ohio 19 (July 1961): 166-190.