Catalogue of the very valuable and highly important collection of ancient and modern pictures, of the Dowager Marchioness of Thomond, deceased : comprising, besides various specimens of some of the greatest masters in the Italian, French, Flemish and Dutch schools ... finest works of the late Sir Joshua Reynolds ... : with the purchasers' names, and the prices at which they were sold by by [sic] Mr. Christie .. May 18, 1821, and following day.