Twain, Mark, 1835-1910. Roughing It / by Mark Twain ; edited with an introduction by Hamlin Hill. - New York, N.Y. : Penguin, 1981. - 590 p. : port. ; 19 cm. - The Penguin American library . - Penguin American library. . Bibliography: p. 25-26. ISBN: 0140390103 (pbk.) LCCN: 81010593 Subjects--Personal Names: Twain, Mark, 1835-1910 --Travel. Subjects--Topical Terms: Authors, American--19th century--Biography. Subjects--Geographic Terms: West (U.S.)--Description and travel. LC Class. No.: PS1318.A2 / H5 1981 Dewey Class. No.: 818/.403 B