I've come across an enigmatic entry in Day By Day for January 12, 1879

January 12 Sunday – the Clemenses loved to entertain, something expected 
of many Nook Farm residents. according to Twichell’s journal, a dinner 
was given at Sam’s for Louis Fréchette, Poet Laureate of Canada:

“M.T. /never was/ so funny as this time. The perfect art of a certain 
kind of story telling will die with him. No one beside /can/ ever equal 
him, I am sure” [Andrews 92].

This doesn't make much sense to me as Twichell was not in Munich in 1879 
and Sam was not at Nook Farm.  I believe the Andrews reference is to 
Andrews, Kenneth R. /Nook Farm – Mark Twain’s Hartford Circle. /Seattle: 
University of Washington Press, 1950.  I don't have access to that.

/Unaffiliated Geographer and Twain aficionado/