Back in 1865, when Mark Twain's work first appeared in the Post, he was just an aspiring journalist in California. He was so little known that the Post originally gave his name as “Mark Train.” Four years later, he he wrote of his travel to Europe and the Holy Land in Innocents Abroad; excerpts from the book made frequent appearances in the magazine. Later, of course, he would go on to write the classics for which he is best known, including The Adventures of Tom Sawyer and The adventures of Huckleberry Finn.