Correspondence, notes and source material, with correspondents including: Sir Stephen Tallents [former Secretary to the Empire Marketing Board]; Violet, Lady Milner [earlier Lady Edward Cecil]; Sir Hugh Thornton [former Private Secretary to 1st Lord Milner] on subjects including Milner's suggestion that Marshal Ferdinand Foch should replace Marshal Philippe Petain as General-in-Chief in 1918 and details of Milner's staff (6); 9th Lord Bessborough [earlier Lord Duncannon] on the War Cabinet's debate on whether to recall General Sir Douglas Haig [Commander-in-Chief] from France in 1918; William Worsfold on the meeting of the Supreme War Council in 1918; O W Stebbings, Conservative Research Department (5); Major-General Sir Hereward Wake on military events in January 1918 (5); 1st Lord Hankey (7); Sir Vincent Baddeley [former Assistant Secretary of the Admiralty] (4); Margot, Lady Davson; Sir [Arthur] Cosmo Parkinson, recalling his time at the Colonial Office; Robert Wiseman [former Assistant Secretary, Colonial Office]; Sir Charles Jeffries [former Principal, Colonial Office]; George Plant [former Secretary, Oversea Settlement Committee, Dominions Office] (2); Sir Edward Harding [former Assistant Under-Secretary of State, Dominions Office]; Sir William McLean, Colonial Office Information Department; Alec Joyce [Head of Information Department, Commonwealth Relations Office].

Also includes: notes on Palestine and the Balfour Declaration, including a letter from Chaim Weizmann [President of the World Zionist Organisation and Jewish Agency for Palestine]; letter from 4th Lord Salisbury on drafting the defence resolutions of [? the Imperial Conference, 1923]; extracts from Thornton's diary, December 1917; Milner's report on his journey to France in March 1918; copy of a letter from LSA to Stanley Baldwin, Prime Minister, on the economic situation and his concerns about Winston Churchill's forthcoming Budget (1927); letter from Lord Athlone [Governor-General of South Africa] on the use of LSA's recent visit to South Africa during his Empire Tour; copies of letters from LSA to King George V and the Prince of Wales [later King Edward VIII and the Duke of Windsor] on his visits to New Zealand, Australia and South Africa during the Empire Tour; text of a broadcast by Hankey on inter-Imperial relations, recalling the Balfour Formula of 1926; reprint of an article by LSA on the Imperial Conference, 1926; note of a talk with Margery, Lady Greenwood on reprisals by the Black and Tans; history of discussions with South Africa over Basutoland [later Lesotho], Bechuanaland [later Botswana] and Swaziland [later Eswatini], 1909-39.