Archives of the Duke of Northumberland, The Percy Letters and Papers, Rundell Bridge and Rundell Account, 15 July 1822: '2 round silver-gilt Dishes & Covers for Ice to fit occasionally to the Wine Coolers - 69 (oz.). 18 (dwt.) at 12/- (per ounce), 41 18 (s.) 10 (d.)'
M. Clayton, The Collector's Dictionary of Silver and Gold of Great Britain and North America, Woodbridge, 1971, p. 162
V. Brett, Sotheby's Directory of Silver, 1600-1940, London, 1986, p. 253, fig. 1142