A catalogue of a very beautiful assemblage of original chalk drawings ... being a choice part of his private collection of his own works, of that justly celebrated and very elegant artist, F. Bartolozzi, Esq. R. A. and recently brought from Portugal. Also, a few ... drawings ... by that ingenious artist, Mr. Collopy, and a few prints, which are sold by order of his executors: Which will be sold by auction by Mr. Christie, at his great room, Pall Mall, on Saturday, May 2d, 1812 ...