Longtime senator of Missouri (1782-1858) who was a strong advocate of westward expansion of the United States, remembered for fighting a duel with Andrew Jackson in 1812 before becoming a key supporter of his administration. ALS signed “Thomas H. Benton,” one page, 6.5 x 8, November 22, 1856. Letter to Coleman, Hill, Cabot, and Wilmer, in part: "Your invitation to lecture before the Everett Library Association of Phil. has been duly received, and will have [to wait], with others, for an answer until after my return from New England—for which quarter of the Union I set out tomorrow evening, not to get back until towards Christmas." In very good to fine condition, with show-through at the corners from old mounting remnants on the reverse.