Catalogue of a Collection of Engravings (including the Property of a Nobleman) Comprising Rare Mezzotint Portraits, Early English Fancy Subjects of the Bartolozzi School, a Portfolio of Proof Engravings and Etchings, the Property of the Late Stephen Fraser, Esq., of Hawick, a Large Number of Water-colour Drawings Mostly by Old Masters and Oil Paintings of the Late G. Walton, Esq. and Others