Note 18 — INTRODUCTION
Reading edition
"Historical Chronicle," G.M., 41 (1771), 237-238; William T. Whitley, Artists and their Friends in England, 1700-1799 (Boston: Medici Society, 1928), I, 269-272; "Johnson, Percy, and Sir William Chambers," Bodleian Library Record, 4 (1952-53), 291-292.