CLEMENS, SAMUEL LANGHORNE ("Mark Twain"). The Celebrated Jumping Frog of Calaveras County, And Other Sketches. New York: C.H. Webb, 1867. 12mo, original lavender cloth, bevelled edges, the frog, in gilt, is in the lower left part of the front cover, wear at ends of spine and fore-corners, spine a bit faded, covers lightly soiled and spotted; half morocco slipcase. FIRST EDITION, FIRST PRINTING, OF THE AUTHOR'S FIRST BOOK, which catapulted him to literary celebrity; inserted leaf of advertisements at front. BAL 3310; Zamorano 80, no. 17: "Perhaps no short sketch of Twain's so quickly won wide popularity as did 'The Jumping Frog.'"