Most of the correspondence of Desmond and Molly MacCarthy with their colleagues and friends is arranged in chronological order. Seven individual files have been kept intact and filed alphabetically after the chronological file. Consult Manuscripts Index for dates of letters of individual correspondents. Correspondents include: Lady Cynthia Mary Evelyn (Charteris) Asquith, Countess Margot Asquith, Enid Bagnold, Maurice Baring, Sir James Matthew Barrie, Sir Max Beerbohm, Clive Bell, Vanessa (Stephen) Bell, Hilaire Belloc, Lady Helen Violet Bonham Carter, Irene Cooper-Willis, Ethel Anne Priscilla (Fane) Grenfell, Baroness Desborough, Thomas Stearns Eliot, Edward Morgan Forster, Roger Fry, Duncan James Corrowr Grant, Harley Granville-Barker, Bryan Walter Guinness, Thomas Hardy, Leslie Poles Hartley, John Maynard Keynes, Hope Mirrlees, George Moore, George Edward Moore, Lady Ottoline Violet Anne (Cavendish-Bentinck) Morrell, Raymond Mortimer, Violet Paget, Betsy Graves Reyneau, Bertrand Russell, George Bernard Shaw, Logan Pearsall Smith, Giles Lytton Strachey, George Macaulay Trevelyan, Robert Calverley Trevelyan, Arthur Waley, Judith Anne Dorothea Wentworth Blunt-Lytton, Baroness Wentworth, Virginia (Stephen) Woolf.
- Box 1: 1876 - 1939
- Box 2: 1940 - 1991; undated
- folders 1-14: Abbott, Reymond 1895-1953
- folders 15-19: Asquith, Cynthia 1918-1953
- folders 20-21: Asquith, Margot 1917-1945
- folders 22-23: Baring, Maurice 1899-1945
- folders 24-27: Cooper-Willis, Irene 1916-1918
- folders 28-29: Morrell, Lady Ottoline 1914-1933
- folders 30-31: Woolf, Virginia 1911-1940
Correspondence between Desmond and Molly only. There are 279 letters from Desmond to Molly and 377 letters from Molly to Desmond. They are interfiled into one chronological arrangement.
- Box 4: 1901 - 1952; undated
Correspondence of Desmond and Molly with Desmond's mother Louise Jeanne Wilhelmine (de la Chevallerie) MacCarthy. Interfiled into one chronological arrangement.
- Box 5: 1861 - 1937; undated
- Box 6
Correspondence of the MacCarthy and Warre-Cornish families, excluding the correspondence of Molly, Desmond and Louise MacCarthy with each other (see Sections II and III). The letters are interfiled into one chronological arrangement. Consult Manuscripts Index for dates of letters of the individual correspondents. Notable family members present as correspondents include: Vanessa Bell, Anne Thackeray Ritchie, Gerald Warre-Cornish, and Francis Warre-Cornish. Other correspondents of family members include: Maurice Baring, Lord Edward Christian David Gascoyne-Cecil, Mary Elizabeth Coleridge, Esmé Valerie (Fletcher) Eliot, Thomas Hardy, Henry James, Neville Stephen Lytton, Sir Edward Howard Marsh, Alan Noel Latimer Munby, and Judith Anne Dorothea Wentworth Blunt-Lytton, Baroness Wentworth.
- Box 6
- Box 7: 1905 - 1958; undated