Vol. xciii b. Naval and Military Despatches Relating to Operations in the War. September, October and November,1914 (London: HMSO, 1914), including Keyes’s despatch detailing submarine actions.
Vol. xciii c. The Whitehead Torpedo in War: Its Use Against Single Ships by Surface Craft and Submarines, by Adm. Sir Reginald Custance (Edinburgh: William Blackwood & Sons, 1914).