Dear RHH, Thank you very much. This certainly does seem the best supported and most likely of the hypotheses. And, as I remember the expression on Twain's face, it seems a bit more pained than amused. Of course, such an expression could be used as part of a joke, but it is more likely to indicate uncomfortable compliance with an undeniable request, exactly the sort of response any of us might have to a sculptor who asked us to get cold and uncomfortable for a while. Viva! FJH