Keyes Papers. Vol. xxx. Correspondence with Thornton Butterworth Ltd, publishers of Keyes’s Naval Memoirs; 1933-1939, n.d.
Thornton Butterworth Ltd; publishers: Admiral of the Fleet Roger John Brownlow Keyes, 1st Baron Keyes: Correspondence of Adm. of the Fleet Roger John Brownlow Keyes and Thornton Butterworth Ltd. (publishers): 1933-1939, n.d.