All the letters are arranged alphabetically by correspondent and, where required, by date under each name. Some of the letters include replies. A further correspondent has been added to the end of the sequence.

Brough, Joshua, 1897-1902: folios 1-10:

includes letter, 1898, of H.C. Bright to Joshua Brough: folios 8-9;

Brougham, Henry, 1851-1863 and undated: folios 11-52;

Brougham, William, 1860-1867: folios 53-55;

Broughton, Samuel, 1829-1831: folios 56-68:

includes 2 letters, 1829 and 1831, of Samuel Broughton to Thomas Broughton: folios 56-59;

Broughton, Thomas, 1827-1830: folios 69-76;

Brown, Abner, 1845: folios 77-78;

Brown, Albert, 1900: folios 79-80;

Brown, C. Herbert, 1900: folio 81;

Brown, Colin, 1871: folios 82-85:

includes letter, 1871, of William Stirling Maxwell probably to John Murray III: folios 84-85;

Brown, E. Burton, 1903-1904: folios 86-104;

Brown, Edward, 1899 and 1910: folios 105-106;

Brown, Frances, 1845-1846: folios 107-113;

Brown, Bery, 1863: folios 114-115.