Autograph letter, signed, with envelope, of 27 April 1870, containing approximately 55 words. London. Dickens will see Fildes on the next day; he suggests the subjects to be illustrated in part No. V of The Mystery of Edwin Drood.
Autograph letter, signed, of 16 December 1869, published in Nonesuch III, pages 760-761. The letter was not written on 16 January 1870, as claimed in Nonesuch.