"G. Edward Cassady Collection." . . "Sotheby & Co. (London, England)" . . "Library of Sir Herbert Leon"@en . . . . . . . . . "Bibliography"@en . . . . . "Catalogue of the valuable library formed by the late Sir Herbert Leon : English literature, including rare first editions of Keats and Shelley, Butler's Hudibras, Swift's Gulliver travels, Walt Whitman's Leaves of Grass, and several fine series of the novelists, especially Ainsworth ... sold by auction ... 19th of July,1937, and two following days"@en . . "Auction catalogs"@en . . . . . "English literature, autograph letters, extra-illustrated copies"@en . . "Catalogs"@en . . . .