I just stumbled across these two oddities from around 1880 at the Library
of Congress website: "Mark Twain Mazurka" and "Mark Twain Waltz," published
by Wm. Rohlfing & Co., composed by respectively Felix Kraemer and "X.Y.Z."
and allegedly "dedicated" to Messrs Edw. Aschermann & Co., manufacturers of
the celebrated Mark Twain cigars. The covers are illustrated with what I
take to be advertising or packaging graphics for the cigars. Does anyone
know the story about this stuff? For example, did MT get paid for the use
of his name?

For anyone who wants a closer look, here are the links:

https://www.loc.gov/resource/sm1880.15910.0?st=gallery

https://www.loc.gov/resource/sm1880.15909.0?q=mark+twain&st=gallery

 -- Pete Salwen