'Most of the adventures recorded in this book really occurred; one or two were experiences of my own, the rest of those boys who were schoolmates of mine', Mark Twain wrote in the preface to the original 1876 edition. Inspired by his upbringing in a small township on the Mississippi, and written 'to remind adults of what they once were themselves, and of how they felt and thought and talked, and what queer enterprises they sometimes engaged in', Twain's hymn to childhood and the great outdoors remains a classic account of boys on the loose in frontier-era America.