From the description of Conversations with Lord Byron--in 1823 : [n.p.] : autograph manuscript account of their conversation in Ithaca in August 1823, [n.d.]. (Unknown). WorldCat record id: 270664737From the description of Autograph letters signed (7) : [London], to Charles Mackay, 1869 Oct. 27-Dec. 20. (Unknown). WorldCat record id: 270664407From the description of Autograph letter signed "M. M." : [London], to the editor of The Times, 1869 Sept. 24. (Unknown). WorldCat record id: 270663423From the description of Autograph letter : [n.p.], to [Sir George Stephen], 1843 Sept. 4. (Unknown). WorldCat record id: 270662154