Memoirs of Horace Walpole and his contemporaries; including numerous original letters, chiefly from Strawberry Hill; ed. by Eliot Warburton.

First ed.
"Pedigree of the Walpoles", v. 2, p. 571-577.
Compiled by Robert Folkestone Williams. cf. Halkett & Laing. A dictionary of the anonymous and pseudonymous literature of Great Britain ... Boston, 1883. v. 2, col. 1581.