Keyes Papers. Vol. xv. Correspondence with:
1. Gen. Sir Ian Standish Monteith Hamilton, commanded Mediterranean Expeditionary Force (1915), Lord Rector of Edinburgh University (1932-1935); 1915-1944, n.d. See also Add. 82554 E-G.
2. Maj.-Gen. Joseph Charles Haydon, commanded Special Service Brigade (Commandos) (1940-1942), Vice Chief of Combined Operation Staff (1942), commanded 1st Guards Brigade in Italy (1944); 1941-1944, n.d.
Admiral of the Fleet Roger John Brownlow Keyes, 1st Baron Keyes: Major-General Joseph Charles Haydon: Correspondence of Adm. of the Fleet Roger John Brownlow Keyes and Maj.-Gen. Joseph Charles Haydon: 1941-1944, n.d.
Admiral of the Fleet Roger John Brownlow Keyes, 1st Baron Keyes: General Sir Ian Standish Monteith Hamilton, GCMG: Correspondence of Adm. of the Fleet Roger John Brownlow Keyes and Gen. Sir Ian Standish Monteith Hamilton: 1915-1944, n.d.