Our popular image of Mark Twain is of a gruff, gray-haired eccentric, the outspoken literary giant who created enduring novels such as The Adventures of Tom Sawyer and The Adventures of Huckleberry Finn. But once upon a time, Mark Twain was a boy named Samuel Clemens. His birth on November 30, 1835, coincided with the appearance of Halley’s comet, streaking across the sky. A dreamer, a prankster, a lover of great tales, Sam Clemens spent his boyhood years living out adventures on the banks of the mighty Mississippi River.