All the letters are arranged alphabetically by correspondent and by date under each name.
Ibbetson, Henry Levett Boscawen.
Letter, 1862, of Henry Levett Boscawen Ibbetson to John Murray III. Folio 1.
Ideville, Henri Amedee Le Lorne d'.
Letter, 1872, of Henri Amedee Le Lorne d'Ideville, Comte d’Ideville, to John Murray III. Folios 2-3.
Idman, Niilo Rudolf.
Letter, 1914, of Niilo Rudolf Idman to John Murray IV. Folios 4-5.
Ilbert, Courtenay Peregrine.
Letters, 1900, 1903, 1907 and 1917, of Sir Courtenay Peregrine Ilbert to John Murray IV. Folios 6-16.
Folios 15-16. Copy of a letter, 1917, of John Murray IV to Sir Courtenay Peregrine Ilbert.
Illingworth, Agnes Louisa.
Letters and postcard, 1900-1903, 1907 and 1915, of Agnes Louisa Illingworth to John Murray IV and Alexander Henry Hallam Murray. Folios 17-80.
Folio 30. Postcard, 1900, of Internationale Verlagsanstalt to John Murray IV.
Folios 31-33. Draft of a letter, ?1900, of John Murray IV to Erast Evgenievich Gulyaev.
Folios 70-71. Circular, ?1901, advertising ‘The Truth About God’ by Father John Sergieff, translated by Erast Evgenievich Gulyaev and Agnes Louisa Illingworth.
Illustrated London News.
Letter, 1861, of William Green on behalf of the Illustrated London News to John Murray III. Folios 81-82.
Imperial Anti-Socialist League.
Letter, 1909, of Thomas J Haslam on behalf of the Imperial Anti-Socialist League to John Murray IV. Folios 83-85.
Folios 84-85. Circular, ?1909, for the Imperial Anti-Socialist League. Sent as an enclosure of letter, 1909, of Thomas J Haslam to John Murray IV, folio 83.
Letters, 1925, of Edward Impey to John Murray IV. Folios 86-87.
Impey, Elijah Barwell.
Letters, 1821 and 1840, of Elijah Barwell Impey to John Murray II. Folios 88-91.
Letters, 1813, of Mr Imray to John Murray II. Folios 92-94.
Letter, 1877, of William Ince to John Murray III. Folios 95-96.
Letter, 1809, of Elizabeth Inchbald to John Hoppner. Folios 97-100.
Folios 99-100. Photocopy of a letter, 1809, of John Murray II to Elizabeth Inchbald, with a transcription and notes.
Letter, 1807, of Thomas Ingalton to John Murray II. Folios 101-102.
Inge, Susanna Mary.
Letters, 1874-1876, of Susanna Mary Inge to John Murray III. Folios 103-127.