Example image of eyePlorer eyePlorer map for 'Mark Twain': Author List of humorists Pen name United States Adventures of Huckleberry Finn Great American Novel The Adventures of Tom Sawyer President of the United States American literature William Faulkner Florida, Missouri Tennessee Orion Clemens Halley's Comet Hannibal, Missouri Mississippi River Slave state Slavery in the United States Pneumonia Typesetting Cincinnati Philadelphia St. Louis, Missouri Autodidacticism Public library Trade union New Orleans Steamboat Pennsylvania (steamboat) Parapsychology Society for Psychical Research American Civil War Western Theater of the American Civil War Confederate States of America Southern United States The Private History of a Campaign That Failed James W. Nye Nevada Nevada Territory Great Plains Mormon pioneers Rocky Mountains Salt Lake City Stagecoach Roughing It The Celebrated Jumping Frog of Calaveras County Mining Virginia City, Nevada Territorial Enterprise San Francisco