I think the barechested photo was likely taken by Napoleon Sarony about the same time he took photos of Clemens and Cable for the Twins of Genius tour -- a tour in which Clemens gave readings from his forthcoming book HUCKLEBERRY FINN. Those photos, along with the barechested photo, are online in this article: http://www.twainquotes.com/sarony/sarony.html At the time, Sarony was noted for taking photos of actors in various stage poses. Barb