The Cloven Foot: An Adaptation of the English Novel to American Scenes, Characters, Customs and Nomenclature. By Orpheus C. Kerr (R. H. Newell). New York: Carleton. 1870.
The Mystery of Mr. E. Drood. By Orpheus C. Kerr. An English edition of foregoing, with several minor alterations. London: The Piccadilly Annual. 1870.
John Jasper’s Secret: A Sequel to Charles Dickens’s Unfinished Novel, The Mystery of Edwin Drood. By Henry Morford, of New York, and his wife. Issued in parts in America by T. B. Peterson and Bros., Philadelphia, from October 1871 to March 1872; and in England anonymously. An edition of the same work was published in 1901 with the astoundingly false announcement on the title-page that the book is by Wilkie Collins and Charles Dickens the Younger. New York: R. F. Fenno and Co.
The Mystery of Edwin Drood. A Play by Walter Stephens. Performed at the Surrey Theatre, 4th November 1871. Chapman and Hall. 1871.
The Mystery of Edwin Drood. A drama by G. H. Macdermott. Performed at the Britannia Theatre, 22nd July 1872.
The Mystery of Edwin Drood Complete. Part the Second. ‘By the Spirit Pen of Charles Dickens, through a Medium.’ Published at Brattleborough, Vermont, U.S.A. 1873.
The Great Mystery Solved: Being a Sequel to The Mystery of Edwin Drood. By Gillan Vase. 3 vols. London: Remington and Co. 1878.
Le Crime de Jasper. Traduit de l’Anglais. Dentu. Paris: 1879.
Alive or Dead: A Drama. By Robert Hall. Performed at the Park Theatre, Camden Town, 3rd May 1880.
Watched by the Dead: A Loving Study of Dickens’s Half-Told Tale. By Richard A. Proctor. London: W. H. Allen and Co. 1887. (The genesis of this ‘loving study’ appeared as articles in the Belgravia Magazine, June 1878; Leisure Readings, 1882; and Knowledge, 1884; over the pseudonym of ‘Thomas Foster.’)