This document discusses Mark Twain's background and career as an author and public figure. It notes that he began using the pseudonym "Mark Twain" as a journalist in the 1860s and gained fame for his humorous stories and travel writing. Two of his most famous works are The Adventures of Tom Sawyer (1876) and The Adventures of Huckleberry Finn (1885), which focused on the relationship between the titular characters, a poor white boy and a runaway slave. The document also discusses how Twain cultivated an iconic image of himself as an adventurer associated with the American frontier through his novels and public persona.