CLEMENS, SAMUEL ("Mark Twain"). Autographed letter signed ("S.L. Clemens") to Hans Klaus Erlanger, sending him samples of his "Mark Twain" signature and remarks about Mr. Arthur's Tom Sawyer and Huck Finn play. Hartford, 7 Aug. 1902. 2 pages, 8vo, on black-bordered stationery, large portion of first page (signature?) clipped. "Yes, Mr. Arthur's play did greatly please me still more when a few emendations - of a not difficult & yet necessary sort - shall have been made..." -- [Tipped in:] Adventures of Huckleberry Finn. New York, 1891. 8vo, original cloth.