Suffering from wanderlust like many of his countrymen, Mark Twain had the good fortune to be paid to offer his observations in a series of travel letters and books. Curious and indefatigable, he used his incomparable skills to produce the vivid descriptions and humorous commentaries that made his books immensely popular. At the same time, travel writing afforded him the opportunity to engage in more personal explorations. The looseness of the travel...