A catalogue of the Portland Museum, lately the property of The Duchess Dowager of Portland, deceased: which will be sold by auction by Mr. Skinner and Co. on Monday, the 24th of April 1786 ...Skinner and Co. (London, England)[1786]engSignatures: pi⁴, A-2A⁴.At foot of titlepage: "No.", the actual number to be inserted in MS.; a variant is without "No." at the foot of the titlepage.LWL 49 3902: With "No." on t.p. with "753" in ms. 2000 catalogues were sold before the sale began.LWL 49 3902: Horace Walpole's copy with his annotations, including a four-page, signed letter providing a history of the collection.