All the letters are arranged alphabetically by correspondent and by date under each name.

Duncan, James.

Letters, 1813, 1825-1828, 1834 and 1844, of James Duncan to John Murray II and John Murray III. Folios 1-15.

Duncan, John Shute.

Letters, 1807-1809, 1813, 1815, 1818, 1820, 1830 and 1834, of John Shute Duncan to John Murray II. Folios 16-45.

Folios 42-43. Letter, 1831, of John Shute Duncan to Henry Addington, 1st Viscount Sidmouth.

Duncan, Philip Bury.

Letters, 1818, 1825, 1843-1844, 1846 and 1850-1851, of Philip Bury Duncan to John Murray II and John Murray III. Folios 46-60.

Duncan, Robert.

Letter, 1901, of Robert Duncan to John Murray IV. Folios 61-62.

Duncan, William Edmondstoune.

Letters, 1915, of William Edmoundstoune Duncan to John Murray IV. Folios 63-64.

Duncan, William James.

Letter, 1853, of William James Duncan to David Smith. Folios 65-66.

Folio 65. There is an annotation on the recto of this folio in the hand of John Murray II.

Duncan and Alexander Cowan.

Letters, 1812, of Duncan and Alexander Cowan to John Murray II. Folios 67-72.

Folios 69-70. Letter, 1812, signed by Duncan Cowan on behalf of Duncan and Alexander Cowan, to John Murray II.

Duncker, Franz Duncker.

Letter, 1875, of Franz Gustav Duncker to John Murray III. Folio 73.

Duncker and Humbolt.

Letter, 1866, of Duncker and Humbolt to John Murray III. Folio 74.

Duncombe, Charlotte.

Letter, 1848, of Lady Charlotte Duncombe to John Murray III. Folio 75.

Duncombe, Eleanor Harriet.

Letter, 1905, of Eleanor Harriet Duncombe to John Murray IV. Folios 76-77.