[Mark Twain (subject)]. [Jacob Blanck]. A Supplement to a "Bibliography of Mark Twain". Waltham, MA: Harold M. Burstein, 1975. Facsimile edition, originally printed in 1939. Octavo (9 x 6.25 inches; 225 x 160 mm.).  pages. Four in-text illustrations. Bifolium with cover-title. Barely perceptible marginal tanning; a couple tiny soil spots. About fine. A history of the "curved fly" illustration in the first edition of Huckleberry Finn with facsimiles of each state of the plate. (#10256).