http://dig.lib.niu.edu/twain/
Mark Twain’s Mississippi is a searchable and indexed multimedia digital library of some of Samuel Clemons publications and reminiscences. The materials include primary sources, such as historical statistics, texts and images, as well as interpretive essays and digital video segments in which scholars discuss their ideas. The materials are grouped into four themes: economic development, politics, race, religion and culture. Included is a biography of Mark Twain and sound files of songs such as “Steamboat Bill” and “The Slave Mother’s Lament” which illustrate society, politics, and culture on the Mississippi River from 1830-1890. RealPlayer and a special plug-in are needed; they can be downloaded for free at the site.