First, thanks to the expertise and generosity of the Forum members, I have
an impressive list of books by other authors either re-telling Twain's
stories, or featuring Twain himself as a character.  I'll paste the list at
the end of this e-mail, for those who are interested.  And if you don't see
something that should be on it, could you please let me know?  (As a side
note, the one book on the list that 3 or 4 people specifically singled out
as their favorite is the one by Carkeet, which I haven't read yet but will
soon.)
Second, I am back in my beggar's clothes to ask for help with a related
topic.  In response to my query about books, two good folks -- Michael
MacBride and Terry Oggel -- mentioned TV shows that feature appearances by
"Mark Twain" (Star Trek, the Next Generation and Touched by an Angel).  I
also know about an episode of the Simpsons with Tom and Huck in it, but
would love to learn about other TV moments that reference Twain or his
characters/works.  I don't mean made-for-TV versions of Huck Finn, Roughing
It, etc -- but episodes from regular TV shows that make some use of
"Twain."  I promise to share the results this time too.  And would like to
promise that I won't be back in another couple weeks with yet another favor
to ask -- but that would be a stretcher.
Thanks! and here's the list of books, Steve Railton

*Jap Herron,* by Emily Grant Hutchings  (1917)

*Return of Mark Twain,* by Eunice Winkler  (1918)

*Tom Sawyer Grows Up,* by Clement Wood  (1940)

*Murder Stalks the Circle,* by Lee Thayer  (1947)

*Silas Timberman,* by Howard Fast  (1954)

*God Bless U, Daughter,* by Mildred Burris Swanson  (1968)

*The True Adventures of Huckleberry Finn,* by John Seelye (1970, rev. 1987)

*The Fabulous Riverboat,* by Philip Jose Farmer  (1971)

*1876,* by Gore Vidal  (1976)

*A Bloodsmoor Romance,* by Joyce Carol Oates  (1982)

*The Day They Came to Arrest the Book,* by Nat Hentoff  (1982)

*The Boys in Autumn,* (play) by Bernard Sabath  (1986)

*I Been There Before,* by David Carkeet  (1987)

*Never the Twain,* by Kirk Mitchell  (1987)

*Scavengers,* by Yvonne Montgomery  (1987)

*Huckleberry Fiend,* by Julie Smith  (1987)

*Twice Upon a Time,* by Allen Appel  (1988)

*The Further Adventures of Huckleberry Finn,* by Greg Matthews  (1988)

*If I Never Get Back,* by Darryl Brock  (1990)
 also by Brock: *Two in the Field* (1998), and
 a story featuring Twain in *Sherlock Holmes: The American Years* (2010)

*The Great Twain Robbery,* by Robert Guntrum  (1995)

*Test of Time,* by Charles Harrington Elster  (2001)

*Huck Finn and Tom Sawyer Collaboration; The Sequel to Adventures of
Huckleberry Finn,* by Stephen Stewart (2001)

*Mark Twain and Huck Finn Among the Indians,* by Lee Nelson (2003)

*Huckleberry Finn in Love and War: The Lost Journals,* Dan Walker (2007)

*Wild Nights,* by Joyce Carol Oates (2009)

*Adventures of Huckleberry Finn and Zombie Jim,* by W. Bill Czolgosz (2009)

*The Adventures of Tom Sawyer and the Undead,* by Don Borchert (2010)