Since I didn't see the show, I found your comment on the PBS show a bit cryptic. If by "In Converse" you meant an actual pretend dialogue between Lewis and Freud, I don't know of any similar Twain projects. There are at least three books, probably a lot more, about Twain and one other person: Guy Cardwell, Twins of Genius. (1953) On SLC's lecture tour with George Washington Cable. Margaret Duckett, Mark Twain and Bret Harte. (1964) And a favorite of mine, though it's a very old-fashioned kind of criticism: Henry Seidel Canby, Turn West, Turn East: Mark Twain and Henry James. (1951) Mark Coburn [log in to unmask]