In May, 1898, Kemble accepted Bliss's offer to make new illustrations for Twain's 1899 collected works. The illustration you cite appears at p. 93 of PW in the 1899 edition. Those illustrations were used by Harper after they acquired the rights to Twain's works, but were moved around in the text after 1903. I have that letter Kemble sent Bliss, plus one of Kemble's original drawings for the 1899 edition of HF (one of four new drawings he did for that work), one of Kemble's original 1885 drawings for HF, an archive of copyright and publisher's's documents relating to the 1899 edition, and original drawings by other artists for the collected edition, and even Bliss's ink-stained wooden crate that held that held the printing plates for the 1899 HF. There could be something in the archive of publisher's documents on PW that could be of use to you --it's mostly contracts or copyright papers. No original art work for PW; I have some for FTE, $30,000 BEQUEST, and P&P; maybe others. Happy to look around this weekend, if you wish. Kevin Mac Donnell