Catalogue of engravings & drawings (framed and in the portfolio) ... including the property of Colonel Willes, comprising the collection of caricatures, made by his great uncle, the late John Willes ... [etc.] ... a collection of XVIIIth century French line engraving & sporting prints by J.E. Ridinger ... [etc.] ... an interesting series of portraits of William Pitt, etc. [Sotheby's, 1920]