Sir, The Committee for the Abolition of the Slave Trade, finding it may be necessary to produce evidence before the House of Lords in the next session of parliament ...Clarkson, Thomas, 1760-1846, author1792A printed letter.Folded by later owner to 24 x 19 cm. Imperfect: Portion of letter excised with manuscript notes wanting? Signed and annotated in manuscript by Thomas Clarkson; addressed to Dr. Fell of Ulverston, Lancashire.text