The letters have been arranged alphabetically by correspondent surname. A further correspondent has been added to the end of the sequence.

Letter of Richard Burdon Haldane, Viscount Haldane, to George Prothero, 1902: folio 1;

Letters of Frederic Harrison to George Prothero, including copies of notes of Harrison, 1915: folios 2-9;

Letters of Herbert Hensley Henson to George Prothero, 1903: folios 10-12;

Letters of Maurice Henry Hewlett to George Prothero, 1903-1910: folios 13-20;

Letters of William Ralph Inge to George Prothero, ?1908: folios 21-28;

Letter of William James to George Prothero, 1906: folios 29-30;

Letter of Sir Richard Claverhouse Jebb to George Prothero, 1902: folios 31-34;

Letter of Sir Henry Hamilton Johnston to George Prothero, 1910: folios 35-36;

Letter of Peter Alexeivitch Kropotkin to George Prothero, 1909: folios 37-38;

Letters of Andrew Lang to George Prothero and John Cann Bailey, 1903 and undated: folios 39-45;

Letters of Sir Edwin Ray Lankester to George Prothero, 1903 and undated: folios 46-51;

Letter of Hon. Emily Lawless to George Prothero, 1903: folios 52-54;

Letter of William Edward Hartpole Lecky to George Prothero, 1902: folio 55;

Letters of Sir Sidney Lee to George Prothero, 1909: folios 56-59;

Letters of Sir Henry Rider Haggard to George Prothero and John Murray [IV], 1905-1920: folios 60-63.