The 5th Earl of Rosebery's book collection contains several autographed texts.
A signed copy of Coleridge's Aids to Reflection (est £10,000-12,000) describes his view of Christianity as a 'personal revelation', and develops his famous distinction between Reason and Understanding, with annotations on it.
A first edition copy of 'father of psychiatry' Philippe Pinel's Treatise on Insanity (est £2,000-3,000) contains Coleridge's annotations, including his views on philosophy of mind.
The centrepiece of the auction is a set of Byron's letters. There is also an account of William Bligh's travels by the man himself, which he has signed and made out to writer and painter George Keate.
For more details about these pieces and the rest of the sale see here. The sale takes place on October 29 in London.