I just discovered an interesting site for Twain enthusiasts. The library of Congress has a map collection at: http://memory.loc.gov/ammem/gmdhtml/gmdhome.html Search for Hannibal in the "Panoramic Map" collection. There is a panoramic hand-drawn aero view map of Hannibal (1869). It's fun to zoom in on various places familiar to us through Twain drawn not too long after he left his boyhood home. My only question is how the artist got up in the "aero" to sketch the town. Have fun, John