A journalist, wanderer, opinionated and marvelously entertaining, Mark Twain wrote five well-received travel books over his long career. Editor Terry Mort handpicks choice selections for this satisfying anthology, organized geographically. With sections on the Mississippi (Life on the Mississippi), the American West (Roughing It), Australia, the Pacific, India (Following the Equator), the Middle East (The Innocents Abroad), and Europe (A Tramp Abroad).  (TVL77, $15.95)