London: 1867. 1st edition (NCBEL III, 813; Parrish, pp. 66-67). 48 pp. Text double column. 8vo. 9-5/8" x 6-1/2". Blue printed paper wrappers, sewn. Now housed in an archival mylar sleeve. General wear & soiling, especially to rear cover. Some foxing to paper. Overall, a VG copy. Item #1088.7
A collaborative effort by these two pre-eminent Victorian authors [cf. Oppenlander, p. 196, for a distribution of same].