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.
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.