Keyes Papers. Vol. xcvi. Dardanelles Campaign: submarines; 16 April 1915– 7 Jan. 1916, n.d.
1. Capt. (S) orders. Contains: papers by Capt. Heneage on protecting the naval fleet from torpedoes and mines; lists of trawlers to be placed under Royal Navy orders; an English translation of Turkish orders on methods of tracing and destroying submarines; a memorandum on the sighting of a German submarine in the area; a paper on the presence of a French submarine; and details of mine sweeping and net laying operations. 16 April – 13 Nov. 1915, n.d. Partly printed.
2. Reports of submarine activity. Contains reports from individual submarines on operations in the Sea of Marmora. Includes a detailed list of the 40 vessels destroyed by submarine E11 between 5 Aug. and 3 Sept. 1915. 22 May 1915 – 7 Jan. 1916.
Submarines: Adm. Keyes's papers on submarines: 1907-1933, n.d.