Thanks to members of the list who have quickly helped me to locate Charles
Webb's introduction to "The Celebrated Jumping Frog of Calaveras County, And
other Sketches".

On another related point. Is there a generally accepted date for Twain's
rise to national prominence across America. Would it be 1869 when "The
Innocents Abroad" was published as a subscription book?

Ron Hohenhaus
Australian Mark Twain Society