The letters of Augusta Leigh to Lord Byron have been placed at the start of the sequence with the rest of the letters arranged alphabetically by correspondent name. The letter of Leigh to Catherine Gordon Byron was originally included, unfoliated, in MS.43481.

Letters of Augusta Leigh to Lord Byron with excerpts of letters of Lord Byron to Augusta Leigh in the hand of the latter, 1811-1824 and undated: folios 1-13;

Letters and copies of letters of Augusta Leigh to Anne Isabella Byron Noel, Lady Byron, ?1824-1830: folios 14-20;

Letter of Augusta Leigh to Catherine Gordon Byron, 1802: folios 21-22;

Letter of George Anson Byron, 7th Baron Byron, to Augusta Leigh, 1826: folio 23;

Letters of Augusta Leigh to John Hanson, 1803-1830 and undated: folios 24-62.