The Little Know Poetry of Mark Twain

http://www.brainpickings.org/index.php/2013/04/08/mark-twain-poetry/

Mark Twain's daughter, Susy Clemens

A poem he wrote for her is among the collection

of little know works by the author, whose real

name was Samuel Langhorne Clemens.

Mark Twain produced more than 120 poems over
the course of his life — 95 humorous and 31 serious,
with the majority of the latter written after 1890.