Answer: TWAIN

AnswerCrossword Clue
TWAINFinn chronicler
TWAINWit who wrote "When in doubt, tell the truth"
TWAIN"Huckleberry Finn" author
TWAINAuthor depicted next to a steamboat on a 2011 stamp
TWAIN"Is Shakespeare Dead?" writer
TWAINPen name for Clemens
twaina set of two, also TWAY
twaintwo.
twaintwo
TWAINMark with a mustache
TWAINExact copy contains first-rate Clemens (5)
TWAIN"Cauliflower is nothing but cabbage with a college education" writer
TWAINChild's choo...choo
TWAINHe wrote about Sawyer
TWAINMark, of Finn fame
TWAINPudd'nhead's creator
TWAINAuthor n Clemens
TWAINCreator of Sawyer
TWAINShania
TWAIN"Come on Over" singer
TWAIN"A Tramp Abroad" writer
TWAINLiterary name.
TWAINMississippi name
TWAIN" . . . never the ... shall meet"
TWAINKipling non-meeting word
TWAINWriter Mark
TWAINAuthor quoted below
TWAINMark of literature
TWAINSamuel Clemens
TWAINClemens
TWAINWho said "Familiarity breeds contempt - and children"
TWAINAuthor of "The Mysterious Stranger"
TWAINJustin Kaplan subject
TWAIN"Following the Equator" author
TWAIN"Pudd'nhead Wilson" writer
TWAINThe Finn man
TWAINAn author or two (5)
TWAINInjun Joe creator
TWAIN"What Is Man?" essayist
TWAIN"Tom Sawyer" author