"Hannibal (Mo.)" . . . . "Mark Twain & the laughing river"@en . . . "Mark Twain and the laughing river" . . . . . . "Music"@en . . "Songs from the musical about the early life and times of Mark Twain in Hannibal, MO."@en . . . . . . . "Mark Twain and the laughing river"@en . . . "Mississippi River" . .