Keyes Papers. Vol. cxxii. Director of Plans: Contains reports of the Channel Barrage Committee, chaired by Keyes, established to investigate the most effective ways of preventing German submarines from passing through the Dover Straits. Also contains memoranda on Vice-Adm. Bacon’s views on how best to protect the Straits, papers on conferences held to discuss the possibility of an invasion of England, and a paper on a French proposal to operate in Syria;16 March – 23 Dec. 1917, n.d. Keyes was appointed Director of Plans in the Plans Division of the Admiralty in September 1917.
Submarines: Adm. Keyes's papers on submarines: 1907-1933, n.d.