CLEMENS, SAMUEL LANGHORNE ("Mark Twain"). Autograph aphorism signed: "We should not tell the truth too much, it makes us conspicuous. Truly Yours Mark Twain May 10, 1899." Written in ink on the front free endpaper of a copy of his A Tramp Abroad. A New Edition, London: Chatto & Windus, 1898, 8vo, original cloth, worn, American Expeditionary Force Library circular stamp on title-age and below Twain inscription, early owner's name above.