[Mark Twain (subject)]. Otto Heller. The Seriousness of Mark Twain. Address at the Annual Dinner of the State Historical Society at Hannibal, Missouri Thursday, May 9, 1935. [Hannibal]: Hannibal Chamber of Commerce, . First edition. Octavo (9 x 6 inches; 225 x 150 mm.). 14, [2, blank] pages. Full page portrait of Twain on the verso of the title-leaf. Publisher's saddle-stapled binding in the original brown paper wrappers, printed in black. Three soft vertical creases; some trivial edgewear; three small characters written in ink on the rear wrapper. Near fine. (#10247).