Last Saturday/Sunday's edition of Studio 360 on National Public Radio included a "road trip" from New York to Hartford to visit the Twain home. Although the segment with the actual visit was only about 10 minutes long, Twain was mentioned as a precursor of stand-up comedy and an experienced traveler throughout the show. I believe one can listen to it my logging on the http://www.wnyc.org/studio360/ then click on show archive at the top of the screen. Under "Twain, Road, Salvation" you can click onto audible.com to download the audio from the show ---costs $2.95 (less if you want to become a member.)