Sabre, G. E. (1865). Nineteen months a prisoner of war: Narrative of Lieutenant G.E. Sabre, Second Rhode Island Cavalry, of his experience in the war prisons and stockades of Morton, Mobile, Atlanta, Libby, Belle Island, Andersonville, Macon, Charleston, and Columbia, and his escape ... list of officers confined at Columbia, during the winter of 1864 and 1865. New York: American News Co..

Sabre, Gilbert E. Nineteen Months a Prisoner of War: Narrative of Lieutenant G.E. Sabre, Second Rhode Island Cavalry, of His Experience in the War Prisons and Stockades of Morton, Mobile, Atlanta, Libby, Belle Island, Andersonville, Macon, Charleston, and Columbia, and His Escape ... List of Officers Confined At Columbia, During the Winter of 1864 and 1865. New York: American News Co., 1865.

Sabre, Gilbert E. Nineteen Months a Prisoner of War: Narrative of Lieutenant G.E. Sabre, Second Rhode Island Cavalry, of His Experience in the War Prisons and Stockades of Morton, Mobile, Atlanta, Libby, Belle Island, Andersonville, Macon, Charleston, and Columbia, and His Escape ... List of Officers Confined At Columbia, During the Winter of 1864 and 1865. New York: American News Co., 1865.