In Smith's Catalogue raisonné may be found a descriptive account of upwards of three hundred and fifty of the works of this great artist, in many instances tracing the history from the time they were painted, the names of the present possessors, and the principal artists by whom they have been engraved, together with many interesting particulars of the life of the painter. There are eight of his pictures in the English National Gallery, fourteen in the Dulwich Gallery, and many in the possession of the nobility of England. The prices paid for those in the National Gallery vary from 150 to 1000 guineas.