British author (1785–1859) best remembered for his now-classic memoir of his experiments with drugs, Confessions of an English Opium-Eater. Endorsement written vertically over a promissory note, one page, 9 x 3.5, London, July 29, 1823. Over a promissory note for £46.13, De Quincey writes, “Accepted, Thomas De Quincey, Payable at Mess’rs Taylor and Hessey, 93 Fleet Street.” In very good condition, with multiple vertical folds and light scattered toning and soiling. Signed one year after publishing Confessions of an English Opium-Eater in book form, this document presents an especially interesting association, as the address De Quincey gives is that of his publisher. RR Auction COA.