"Life on the Mississippi, Part 12." by Mark Twain is a memoir published in 1883. This work combines Twain's recollections of his youth as a steamboat pilot's apprentice on the Mississippi River before the Civil War with his later travel observations. He chronicles the art of navigating the ever-changing river, his training under experienced pilot Horace Bixby, and his post-war journeys from St. Louis to New Orleans and beyond, documenting how railroads and modern cities transformed the landscape he once knew. (This is an automatically generated summary.)