Horace Walpole, John Wright, George Agar-Ellis Dover (1st baron) (1840). “The letters of Horace Walpole, Earl of Orford: including numerous letters now first published from the original manuscripts”, p.203
Horace Walpole (1848). “Letters Addressed to the Countess of Ossory, from the Year 1769 to 1797: Now First Printed from Original Mss. Edited, with Notes, by R. Vernon Smith”, p.538