The letters have been arranged alphabetically by correspondent surname.

When first made available for consultation and before foliation, this folder contained letters that have since been moved during the cataloguing process. Letter of Charlotte Byrne (previously misattributed to Lord Byron) is now in Ms.40181 f.152; letter of Constantine Metaxas to Lord Byron is now in Ms.43519 ff.193-194; and partial letter of John Cam Hobhouse to Sir Benjamin Hobhouse is now in Ms.43444 f.74.

Letter of Lord Byron to Lord James Wynne de Bathe, 1808: folios 1-2;

Letter of Beauclerk to Lord Byron, 1822: folios 3-4;

Letter of Lord Byron to William Henry Cavendish Cavendish-Bentinck, 3rd Duke of Portland, 1808: folios 5-6;

Letter of William Henry Cavendish Cavendish-Bentinck to Lord Byron, 1808: folios 7-8;

Letters of Marina Querini Benzon to Lord Byron, in Italian, 1819: folios 9-14;

Letter of Mary Berry to Lord Byron, probably 1814: folios 15-16;

Letter of Lawrence Henry Blakeney to Lord Byron, 1814: folios 17-18;

Letter of Robert Bland to Lord Byron, 1811: folio 19;

Letter of Sir Gilbert Blane to Lord Byron, 1813: folio 20;

Letter of Lord Byron to Edward Blaquiere, 1823: folios 21-22;

Letter of Peter von Bohlen to Lord Byron, 1823: folio 23;

Letter of Markos Botsaris to Demetrio Corgialegno, 1823: folios 24-25;

Letter of J S Bowes to Lord Byron, 1814: folios 26-27;

Letters and copy of a letter of Howe Peter Browne, 2nd Marquess of Sligo, to Lord Byron, 1808, 1810-1813: folios 28-52;

Letter of James Hamilton Browne to Lord Byron, 1823: folios 53-54;

Letters of Thomas Bruce, Lord Elgin, to Lord Byron, 1811: folios 55-58;

Letter of George W Bruen to Lord Byron, 1822: folios 59-60;

Letters of Sir Francis Burdett to Lord Byron, 1813 and 1822: folios 61-64;

Letters of Sir James Bland Burges (later Lamb) to Lord Byron, 1815 and undated: folios 65-69;

Letters of Samuel Butler to Lord Byron, 1812-1813: folios 70-76;

Two envelope wrappers addressed to Lord Byron, 1813-1815: folios 77-78.