1776, Edward Gibbon, chapter X, in The History of the Decline and Fall of the Roman Empire, volume I, London: […] W[illiam] Strahan; and T[homas] Cadell, […]
1869, Mark Twain [pseudonym; Samuel Langhorne Clemens], chapter XXXII, in The Innocents Abroad, or The New Pilgrims’ Progress; […], Hartford, Conn.: American Publishing Company. […]