Correspondents include: May Harcourt; Christian, Lady Goschen; 10th Duke of Marlborough [earlier Lord Blandford] and Mary, Duchess of Marlborough [earlier Mary, Lady Blandford]; Leslie Rowan [former Principal Private Secretary to WSC]; "Tommy" [Charles Thompson]; Sir Edward Marsh [former Private Secretary to WSC]; Margaret, Lady Birkenhead; Sir David Maxwell Fyfe [later 1st Lord Kilmuir]; Hope Rhys [later Hope, Lady Dynevor] (2); Cardinal Francis Spellman, Archbishop of New York; Colin Coote [Deputy Editor, Daily Telegraph and Morning Post]; Oswald Frewen; Edgar Stogdon; Sidney Chapin; [Sir Philip Morris], Vice-Chancellor, Bristol University; Anne, Lady Islington [earlier Anne Dickson-Poynder] (3); 1st Lord Leathers; Lady Caroline Waterhouse [earlier Lady Caroline Spencer-Churchill]; Sir Andrew Duncan; Hugo Baring; Lady Violet Bonham-Carter [earlier Violet Asquith and Violet, Lady Bonham Carter, later Lady Asquith of Yarnbury]; John Martin [former Private Secretary to WSC]; "Pug" [1st Lord Ismay]; Vice-Admiral Thomas James; "Charlie" [7th Lord Londonderry, earlier Lord Castlereagh]; Kathleen Hill [Secretary to WSC]; Agatha, Lady Hindlip; Joan, Lady Altrincham [earlier Joan, Lady Grigg]; Clement Attlee [Prime Minister]; Mary Churchill [later Mary Soames]; 1st Lord Cherwell [earlier F A Lindemann]; Sir Shane Leslie; Oliver Locker-Lampson; Rene Massigli [French Ambassador to Britain]; 5th Duke of Palmella [Portuguese Ambassador to Britain]; Bernard Baruch; Queen Mary; Sarah Oliver ("Mule") [earlier Sarah Churchill, later Sarah Beauchamp, then Sarah, Lady Audley]; James Rothschild; Sir Felix Cassel; Cornelia, Lady Craven; Major-General Frederic Worthington; Joan Vickers; Michiels van Verduynen, Ambassador of the Netherlands to Britain; Lady Juliet Duff; Tien-Hsi Cheng [Chinese Ambassador to Britain]; Nellie Romilly [earlier Nellie Hozier]; Ronald Hamilton; Shelagh, Duchess of Westminster [earlier Shelagh Cornwallis-West]; David, 1st Lord Margesson; Lady Lilian Grenfell [earlier Lady Lilian Spencer-Churchill]; John Peck [former Private Secretary to WSC]; Frederick Stern; William Deakin; Duff Cooper [later 1st Lord Norwich] and Lady Diana Cooper [later Diana, Lady Norwich]; Eleanor Warrender; Christopher Soames; President Harry S Truman; Jan Smuts [Prime Minister of South Africa]; Mackenzie King [Prime Minister of Canada]; Alice, Lady Wimborne [earlier Alice Guest]; Sir Patrick Hannon; Alice, Lady Avebury; 17th Duke of Alba; Count Edward Raczynski; Sir John Anderson [later 1st Lord Waverley]; "Jack" [1st Lord Mottistone, earlier John Seely]; Paul Maze; "Max" [1st Lord Beaverbrook, earlier Sir Max Aitken]; Margaret, Lady Kimberley; John Colville [former Assistant Private Secretary to WSC]; "Bobbety" [Lord Cranborne, later 5th Lord Salisbury]; Horatia Seymour; Sir Leslie Scott; Eric, 2nd Lord Chaplin; "Vere" [9th Lord Bessborough, earlier Lord Duncannon]; Harold Macmillan [later 1st Lord Stockton]; Lionel Curtis; "Scribe" [1st Lord Altrincham, earlier Sir Edward Grigg]; Sir Desmond Morton; "Birdie", Lady Ilchester; "Bill" [1st Lord Camrose, earlier Sir William Berry]; "Ettie" [Ethel, Lady Desborough]; Sir Archibald Sinclair [later 1st Lord Thurso]; Pamela, Lady Lytton [earlier Pamela Plowden]; Ivor, [2nd Lord Wimborne, earlier Lord Ashby St Ledgers, earlier Ivor Guest]; "Q" [1st Lord Quickswood, earlier Lord Hugh Cecil]; George Cornwallis-West; Ava, Lady Anderson [earlier Ava Wigram, later Ava, Lady Waverley].Also includes: lists of correspondents and replies.